Dublin Institute for Advanced Studies DIAS
Dublin Institute for Advanced Studies DIAS
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Loop Quantum Gravity and Quantum Information
Speaker: Eugenio Bianchi (Penn State University)
Abstract: I will give a brief introduction to key aspects of loop quantum gravity, using the quantum polyhedron as a model system. Then I will discuss how the entanglement entropy of geometric observables provides a probe of locality and semiclassicality of quantum states of the geometry.
มุมมอง: 160

วีดีโอ

Decoding the Physics of the Early Universe Through Primordial Black Holes, Dark Matter & GWs
มุมมอง 8214 วันที่ผ่านมา
Speaker: Riajul Haque (Indian Statistical Institute Kolkata) Abstract: I will start my talk with a brief overview of the standard reheating scenario. Then, I will discuss reheating through the evaporation of primordial black holes (PBHs) if one assumes PBHs are formed during the reheating phase. Depending on their initial mass, abundance, and inflaton coupling with the radiation, I discuss two ...
Are Entropy Bounds Epistemic?
มุมมอง 89หลายเดือนก่อน
Speaker: Emily Adlam Abstract: Entropy bounds have played an important role in the development of holography as an approach to quantum gravity. In this talk I will discuss several interpretations of the covariant entropy bound. I observe that there is a possible way of thinking about the covariant entropy bound which would suggest that it encodes an epistemic limitation rather than an objective...
Thermodynamics as a Tool for (Quantum) Gravitational Dynamics
มุมมอง 51หลายเดือนก่อน
Speaker: Marek Liška (DIAS) Abstract: Since the seminal work of T. Jacobson, it has been known that thermodynamics of local causal horizons encodes equations governing gravitational dynamics. I discuss how this thermodynamic perspective can improve our understanding of gravity. I first argue that the classical dynamics implied by thermodynamics correspond to unimodular (Weyl transverse) gravity...
Newgrange and JWST: Humanity's Enduring Quest to Understand the Universe
มุมมอง 104หลายเดือนก่อน
Despite being separated by millennia, both Newgrange and JWST underscore humanity's enduring quest to understand our place in the cosmos through the study of the stars and the universe. This talk was delivered by Dr. Frank Prendergast, archaeoastronomer and Emeritus Research Fellow at Technological University Dublin, and Professor Gillian Wright, European Principal Investigator of MIRI and Dire...
A Simple Axiom for Euclidean Quantum Field Theory
มุมมอง 213หลายเดือนก่อน
Speaker: Werner Nahm (DIAS) Abstract: Mathematical interest in quantum field theory was hampered by the lack of a definition that mathematicians could remember. Here is one: A unitary euclidean quantum field theory is a functor from a category of Riemannian manifolds (with boundaries) to a category of Hilbert spaces (with linear maps). In the non-unitary case, the latter have to be generalized ...
Numerical Relativity in Effective Field Theories of Gravity
มุมมอง 67หลายเดือนก่อน
Speaker: Aaron Held (Ecole Normale Supérieure) Abstract: The age of gravitational-wave astronomy is now in full swing. For the first time, we gain observational access to the highly dynamical strong-field regime of the gravitational interaction. Constraining potential deviations from General Relativity (GR) requires reliable waveform predictions, not just in GR, but also when higher curvature c...
Learning Theory-Informed Priors for Bayesian Inference: A Case Study with Early Dark Energy
มุมมอง 78หลายเดือนก่อน
Speaker: Michael Toomey (MIT) Abstract: Cosmological models are often formulated in the language of particle physics, using quantities like the axion decay constant, but tested against data using physical quantities such as energy density ratios, with uniform priors assumed on these quantities. This standard approach overlooks important theory-driven priors, including constraints from fundament...
Summer Students - Final Presentations : Part 2
มุมมอง 562 หลายเดือนก่อน
Speakers: Beth Campbell, Patrick Gormley & Luke Johnson Title: Demonstrating Perfect Quantum State Transfer Through A Chaotic Spin Chain Speaker: Tomas Gillanders Title: Exploring Unlinkings of Symmetric Quivers & Permutohedra
Summer Students - Final Presentations : Part 1
มุมมอง 1182 หลายเดือนก่อน
Speakers: Matthew Blakeney, Tim Daly & Jack Murphy Title: Hamiltonian Monte Carlo Simulations of the BFSS Matrix Model Speaker: Benjamin Clark Title: Changing the Fundamental Constants of the Universe Speakers: Adam Luddy, Colm McElwain & James Kilcoyne
Primordial Black Holes from Stochastic Inflation
มุมมอง 872 หลายเดือนก่อน
Speaker: Syksy Rasamen (University of Helsinki) Abstract: Primordial black holes are a longstanding candidate for dark matter. I will discuss how to generate their seeds from inflation, and how stochasticity can enhance the black hole abundance by orders of magnitude.
Gravitational Waves as a Probe of the Early Universe
มุมมอง 1262 หลายเดือนก่อน
Speaker: Valerie Demcke (CERN) Abstract: Due to their extremely weak interactions, gravitational waves are a very promising, but also challenging, probe of the early Universe. In this talk I will review the status of gravitational wave searches across different frequency bands, including the growing evidence for a stochastic gravitational wave background at pulsar timing arrays and data analysi...
Precise Predictions and New Insights for the Migdal Effect
มุมมอง 1023 หลายเดือนก่อน
Speaker: Matthew Dolan (University of Melbourne) Abstract: The scattering of neutral particles by an atomic nucleus can lead to electronic ionisation and excitation through a process known as the Migdal effect. I will describe the necessity of revisiting previous calculations to provide more accurate predictions which allow for large nuclear recoil velocities and incorporate the effects of mult...
Fluid Dynamics, Edge Modes and All That
มุมมอง 863 หลายเดือนก่อน
Speaker: Parameswaran Nair (CUNY, New York) Abstract: I will describe a formulation of fluid dynamics in terms of co-adjoint orbits in group theory and use it to analyze the effects of anomalies, spin-orbit coupling, etc. Then I will describe how to analyze the dynamics of color charges using edge modes in nonabelian gauge theories and how this leads to equations for color flows in QCD.
Precise Predictions and New Insights for the Migdal Effect
มุมมอง 854 หลายเดือนก่อน
Speaker: Matthew Dolan (University of Melbourne) Abstract: The scattering of neutral particles by an atomic nucleus can lead to electronic ionisation and excitation through a process known as the Migdal effect. I will describe the necessity of revisiting previous calculations to provide more accurate predictions which allow for large nuclear recoil velocities and incorporate the effects of mult...
Learning 4-Dimensional Knot Invariants from the Jones Polynomial
มุมมอง 724 หลายเดือนก่อน
Learning 4-Dimensional Knot Invariants from the Jones Polynomial
Are Supermassive Black Holes Primordial?
มุมมอง 1525 หลายเดือนก่อน
Are Supermassive Black Holes Primordial?
Mary Mulvihill Award 2024 - Highly Commended Award : Róisín Ferguson
มุมมอง 715 หลายเดือนก่อน
Mary Mulvihill Award 2024 - Highly Commended Award : Róisín Ferguson
Mary Mulvihill Award 2024
มุมมอง 355 หลายเดือนก่อน
Mary Mulvihill Award 2024
Universal Electromagnetic Properties of Strongly-coupled Electron-phonon Superconductors
มุมมอง 1355 หลายเดือนก่อน
Universal Electromagnetic Properties of Strongly-coupled Electron-phonon Superconductors
Search for Cosmic Strings Through Their Gravitational Wave Signals
มุมมอง 1305 หลายเดือนก่อน
Search for Cosmic Strings Through Their Gravitational Wave Signals
From Classical to Quantum Fields on Causal Sets
มุมมอง 1095 หลายเดือนก่อน
From Classical to Quantum Fields on Causal Sets
CATCH22+2 2024-05-05
มุมมอง 456 หลายเดือนก่อน
CATCH22 2 2024-05-05
CATCH22+2 2024-05-04
มุมมอง 506 หลายเดือนก่อน
CATCH22 2 2024-05-04
CATCH22+2 2024-05-03
มุมมอง 546 หลายเดือนก่อน
CATCH22 2 2024-05-03
CATCH22+2 2024-05-02
มุมมอง 666 หลายเดือนก่อน
CATCH22 2 2024-05-02
CATCH22+2 2024-05-01 Afternoon Sessions
มุมมอง 1226 หลายเดือนก่อน
CATCH22 2 2024-05-01 Afternoon Sessions
CATCH22+2 2024-05-01 Morning Sessions
มุมมอง 856 หลายเดือนก่อน
CATCH22 2 2024-05-01 Morning Sessions
Flavour Puzzles and the LHCb Experiment
มุมมอง 626 หลายเดือนก่อน
Flavour Puzzles and the LHCb Experiment
Flavour Puzzles and the LHCb Experiment
มุมมอง 206 หลายเดือนก่อน
Flavour Puzzles and the LHCb Experiment

ความคิดเห็น

  • @caetlynrose4
    @caetlynrose4 21 ชั่วโมงที่ผ่านมา

    thank you.

  • @shawns0762
    @shawns0762 19 วันที่ผ่านมา

    Dark matter is dilated mass. Mass that is dilated is smeared through spacetime relative to an outside observer. It's the phenomenon our high school teachers were talking about when they said "mass becomes infinite at the speed of light". A graph illustrates its squared nature, it increases at an exponential rate the closer you get to the speed of light. Time dilation is just one aspect of dilation. Dilation will occur wherever there is an astronomical quantity of mass. This includes the centers of very high mass stars and the overwhelming majority of galaxy centers. The mass at the center of our own galaxy is dilated. This means that there is no valid XYZ coordinate we can attribute to it, you can't point your finger at something that is smeared through spacetime. In other words that mass is all around us. The "missing mass" needed to explain galaxy rotation curves is dilated mass. Dilation does not occur in galaxies with low mass centers because they do not have enough mass to achieve relativistic velocities. It has been confirmed in 6 very low mass galaxies including NGC 1052-DF2 and DF4 to have no dark matter. In other words they have normal rotation rates. All binary stars have normal rotation rates for the same reason.

  • @dawsonbell4368
    @dawsonbell4368 หลายเดือนก่อน

    Thank you, TH-cam algorithm, for believing I was smart enough to understand this video. Unfortunately, you were wrong, but the thought was nice.

  • @tybeedave
    @tybeedave หลายเดือนก่อน

    are there 4 elements of reality, each associated with a natural force?

  • @JohnGeometresMaximos
    @JohnGeometresMaximos หลายเดือนก่อน

    Please change the "Subscriber" category so that we can receive notifications every time you upload a video.

  • @shawns0762
    @shawns0762 2 หลายเดือนก่อน

    General Relativity predicts dilation wherever there is an astronomical quantity of mass, not singularities. Dilation explains dark matter. In the 1939 journal "Annals of Mathematics" Einstein wrote - "The essential result of this investigation is a clear understanding as to why the Schwarzchild singularities (Schwarzchild was the first to raise the issue of General Relativity predicting singularities) do not exist in physical reality. Although the theory given here treats only clusters (star clusters) whose particles move along circular paths it does seem to be subject to reasonable doubt that more general cases will have analogous results. The Schwarzchild singularities do not appear for the reason that matter cannot be concentrated arbitrarily. And this is due to the fact that otherwise the constituting particles would reach the velocity of light." He was referring to the phenomenon of dilation. Mass that is dilated is smeared through spacetime relative to an outside observer. It's the phenomenon our high school teachers were talking about when they said "mass becomes infinite at the speed of light". A graph illustrates its squared nature, dilation increases at an exponential rate the closer you get to the speed of light. A time dilation graph illustrates the same phenomenon, it's not just time that gets dilated. Dilation occurs wherever there is an astronomical quantity of mass because high mass means high momentum. This includes the centers of very high mass stars and the overwhelming majority of galaxy centers. The mass at the center of our own galaxy is dilated. This means that there is no valid XYZ coordinate we can attribute to it, you can't point your finger at something that is smeared through spacetime. In other words that mass is all around us. Dilation does not occur in galaxies with low mass centers because they do not have enough mass to achieve relativistic velocities. It has been confirmed in 6 very low mass galaxies including NGC 1052-DF2 and DF4 to have no dark matter. In other words they have normal rotation rates. All binary stars have normal rotation rates for the same reason.

  • @ikkrijgnoggeldvanje
    @ikkrijgnoggeldvanje 2 หลายเดือนก่อน

    Starts at 06:33

  • @zhavlan1258
    @zhavlan1258 3 หลายเดือนก่อน

    Hello. Is it possible at your university to create a working❤❤ group involving students to work on a new experiment? You understand that one mind and a person are not enough? (for 119 years) By determining the constancy of speed of light, all experiments and Michelson-Morley experiments are indirect and incomplete. If the Michelson-Morley experiment was carried out on a bus or airplane and was used to determine speed. only then will this experience be direct. Therefore, Einstein does not rely on the Michelson-Morley experiment. Question. Do you have an example of such direct experience? New technologies, new research tools Let me suggest for schoolchildren and students on one's own to measure the Universe, dark energy, black holes, etc. To do this, I propose two practical devices. «laser tape measure *+reference distance* 1,000,000 m”» and «Michelson-Morley HYBRID Gyroscope». I am writing to you with a proposal for the joint invention of a HYBRID gyroscope from non-circular, TWO coils with a new type of optical fiber with a “hollow core photonic-substituted vacuum zone or (NANF)” where - the light travels 500000 (In a laser tape measure, the length of the optical fiber is fixed at 1000000 ) meters in each arm, while it does not exceed the parameters 124/124/124 cm, and the weight is 84 kg. Manufacturers of “Fiber Optic Gyroscopes” can produce HYBRID gyroscopes for educational and practical use in schools and higher education institutions. Einstein dreamed of measuring the speed of a train, an airplane - through the Michelson-Morley experiment of 1881/2024, and only then would the experiment be more than 70% complete. This can be done using a fiber optic HYBRID gyroscope. Based on the completion of more than 70% of Michelson's experiment, the following postulates can be proven: Light is an ordered vibration of gravitational quanta, and dominant gravitational fields adjust the speed of light in a vacuum. you can make scientific discoveries; in astronomy, astrophysics, cosmology, higher theoretical physics,... (We are not looking for ether, we will see the work of gravitational quanta) The result is a «theory of everything» in a simple teaching device and a new tape measure for measuring the universe.

  • @freedomsaoirse
    @freedomsaoirse 9 หลายเดือนก่อน

    Galánta. It would be nice to have the 'subtitles' or text on the screen as you read the selections.

    • @DIASDublin
      @DIASDublin 7 หลายเดือนก่อน

      If you click the cc button on the screen it adds captions, hope this helps

  • @feels_bad-man
    @feels_bad-man 9 หลายเดือนก่อน

    Thanks for the recording!

  •  10 หลายเดือนก่อน

    Law making process 🏰🏰🏰

  • @inverse_functor
    @inverse_functor 11 หลายเดือนก่อน

    Toric variety

  • @michaelmerrigan3086
    @michaelmerrigan3086 11 หลายเดือนก่อน

    Excellent!!

  • @dr.merlot1532
    @dr.merlot1532 ปีที่แล้ว

    Big dick theories!

  • @CHUCKBALLER2024
    @CHUCKBALLER2024 ปีที่แล้ว

    The way I see the world, atoms with force and energy blink into excitement when you are looking at them, and what you touch becomes a force with atomic particles. Everything 1 mm from your body is really not there when the earth is in rotation with our solar system and our galaxy traveling in one direction at 230.000 miles per second. Water is really not there; there are only water atoms you touch. Think of it this way: we are all on a lattice we can't see. Dark matter layered with dark energy with all matter moving in one direction, blinking in and out of excitation. You and I are moving on lattice, and what we touch for microseconds That's how neutrinos pass right through us and the earth without entering action. Plus, there could be a light photon connector that connects us with other life out there. I'm a nobody, but a lifetime of no drugs, drinking, or smoking made my IQ only 147, and I created a world-first, time-priced painting with a new medium and color, making it into the art world. Search Google for "Joseph Charles Colin."

  • @patrickwhite4413
    @patrickwhite4413 ปีที่แล้ว

    😘 'promosm'

  • @arlenestanton9955
    @arlenestanton9955 ปีที่แล้ว

    Can any one understand this? What kind of math beyond, calculus and linear algebra, do you need to know or learn, to understand this kind of math.

  • @liamomurchu4432
    @liamomurchu4432 2 ปีที่แล้ว

    Excellent lecture, and intriguing discussion

  • @big.r.c
    @big.r.c 2 ปีที่แล้ว

    I was at that lecture

  • @owenmcgee8496
    @owenmcgee8496 2 ปีที่แล้ว

    Interesting. I saw some books on Irish literature in the past (e.g. of poetry by Irish & English language authors), but always got the sense that a personal voice, what would might later recognise as a literary voice, was largely absent from Irish language writing. So any kind of study that uncovers the history of a personal voice in Irish language literature is of interest. Interesting too this poem was discovered in Scotland. The Irish in Scotland in medieval times is a subject that may never have been properly excavated or maybe there's just not sources there to delineate a subject. Only a subset, not a set, I bet.

  • @ashishmeena8072
    @ashishmeena8072 2 ปีที่แล้ว

    Hi, can you provide a solare flare and CME data in 24 solar cycle

    • @augustinemmuogbana3382
      @augustinemmuogbana3382 2 ปีที่แล้ว

      For CME data for cycle 24, check CDAW

    • @ashishmeena8072
      @ashishmeena8072 2 ปีที่แล้ว

      @@augustinemmuogbana3382 Hi my self Ashish i am PhD Scholar i need your help in my research can you share your Email Id

  • @Rgoiwnes
    @Rgoiwnes 2 ปีที่แล้ว

    26:50 Please give a warning for the earblast.

  • @muskduh
    @muskduh 2 ปีที่แล้ว

    Thanks for the video

  • @MsFionaxxx
    @MsFionaxxx 2 ปีที่แล้ว

    When he was in government, and meeting British counterparts, the Brits were taken aback to realise that he was far more educated than them (Ph.D.), spoke better than them, had a posher accent than them, and had been born and educated in England to an Irish father. Now he was a Paddy in the Irish government!

  • @cloakingcryptids2057
    @cloakingcryptids2057 2 ปีที่แล้ว

    Wind comes from jets

  • @samuelbeckett2006
    @samuelbeckett2006 2 ปีที่แล้ว

    Really loved this talk!

  • @sitaramgupta9616
    @sitaramgupta9616 2 ปีที่แล้ว

    Great effort.

  • @quantumofspace1367
    @quantumofspace1367 2 ปีที่แล้ว

    Quantum gravity with dark energy works like this; all matter in the Universe excites around itself a quantum space for expansion (pulsations by quantum oscillations of waves). But at the same time, bodies opposite to each other create wave interference, prevent the expansion of the quantum space, for this reason the pressure of the quantum space between the bodies will decrease, resulting in a quantum gravitational attraction of bodies... .

  • @davidwilkie9551
    @davidwilkie9551 2 ปีที่แล้ว

    When Newton identified a Mathematical infinitesimal coordination-identification positioning as a Fluxion, by default Quantum logic of Superspin transverse trancendental e-Pi wave-packaging along a logarithmic line-of-sight, the association with the superimposed integral corresponded to Temporal orbital-orbits in ONE-INFINITY Singularity Superposition-point density-intensity real-numberness existence of Time-Space and String Theoretical Calculus incidence of AM-FM time-timing modulation sync-duration integration.., Logarithmic Time Mechanism for e-log ,Pi-bifurcation antilog axial-tangential orthogonality Condensates. A Geometrical Drawing & Perspective Conception of real-time Superspin Modulation Mechanism, QM-TIME.

  • @CONNELL19511216
    @CONNELL19511216 2 ปีที่แล้ว

    I absolutely loved every moment of this. Well done!

  • @seanmolloy2491
    @seanmolloy2491 3 ปีที่แล้ว

    They should asked for beagáinín pasta

  • @nxgrs74
    @nxgrs74 3 ปีที่แล้ว

    1) By reflecting away 30% of ISR the albedo, which would not exist w/o the atmosphere/GHGs, makes the earth cooler than it would be without that atmosphere like that reflective panel set behind the windshield. Remove the atmosphere/GHGs and the earth would become much like the Moon and Mercury, a barren rock with a 0.1 albedo, 20% more kJ/h, hot^3 on the lit side, cold^3 on the dark. Nikolov, Kramm (U of AK) and UCLA Diviner mission all tacitly agree. 2) the GHG up/down welling, “trapping”/”back” radiating/delaying/intercepting, 100 % efficient, perpetual warming loop requires "extra" energy which according to RGHE theory comes from 3) the terrestrial surface radiating that "extra" energy as a LWIR ideal black body which 4) cannot happen because of the non-radiative heat transfer processes of the contiguous atmospheric molecules and as demonstrated by experiment, the gold standard of classical science: principia-scientific.org/debunking-the-greenhouse-gas-theory-with-a-boiling-water-pot/ 1+2+3+4 = 0 Greenhouse Effect + 0 Greenhouse gas warming + 0 man caused climate change. Version 1.0 062321

  • @fitzgibbano
    @fitzgibbano 3 ปีที่แล้ว

    maith sibh!

  • @fionnmaguireoloughlin3538
    @fionnmaguireoloughlin3538 3 ปีที่แล้ว

    Prof. Dennis Jones doing bits

  • @MarriageSupper06
    @MarriageSupper06 3 ปีที่แล้ว

    It's like All of space behaves like a black hole, particles as planets emergence of one matter

  • @samuelkovacik6062
    @samuelkovacik6062 3 ปีที่แล้ว

    Great vid, thanks Nike!

  • @dillbott2733
    @dillbott2733 3 ปีที่แล้ว

    Thanks for sharing! I searched for this title almost exactly and here it is just a week old

  • @minoomehrad2712
    @minoomehrad2712 3 ปีที่แล้ว

    We praud of you and your group 🙏🙏🙏🙏🙏🙏👍👍👍👍

  • @efrensantosjr
    @efrensantosjr 3 ปีที่แล้ว

    Very technical lecture! Learned a lot!

  • @FraterRC
    @FraterRC 3 ปีที่แล้ว

    <3 go Ionteach!

  • @MacKenziePoet
    @MacKenziePoet 3 ปีที่แล้ว

    This is glorious!

  • @ShaunJW1
    @ShaunJW1 3 ปีที่แล้ว

    Great presentation

  • @caveyful
    @caveyful 4 ปีที่แล้ว

    A black hole doesn't exist, it's 3D surface is encoded onto a 2D event horizon. There is no funnel to the singularity, that model is used for conceptual purposes. This 2D event horizon are the loops of string mathematics implies.

  • @fungo44
    @fungo44 4 ปีที่แล้ว

    Great talk

  • @peterstokes3978
    @peterstokes3978 4 ปีที่แล้ว

    Newton made an incorrect assumption when he thought that matter attracts matter. Gravity can better be explained when another assumption is made: I hold that the correct assumption is that matter and space (what ever that is) are mutually repellent. A body of matter like a planet for example, repels or displaces the space (spacial field) around it. The repelled space in turn reacts on the matter that repelled it and forms it into a coherent sphere. If a body of matter with it's displaced spacial field comes within the influence of another body with it's displaced spacial field, then the two fields will tend to combine to attain a single displaced spacial field, such that the combined resultant force on the two bodies will bring the two bodies together. (Unless their angle and speeds are such that they either orbit each other, or veer off at an angle.) If the two bodies come together, they coalesce into one body with a greater mass, and also therefore a greater displaced spacial field. The two displaced fields now act as one. This now larger newly combined displaced spacial field, (like all displaced spacial fields), would tend to collapse to the neutral steady state of space without any material body present but, in the presence of a body of matter, a state of mutual repulsion occurs, which is the force of 'gravity'. Ones own body weight is determined by the mass of the body you stand on, and therefore it's displaced spacial field, which is combined with your own locally displaced field due to your own body mass. The two fields now act towards the common centre of displacement, which is equal the the centre of combined mass. You're welcome.

  • @new-knowledge8040
    @new-knowledge8040 4 ปีที่แล้ว

    If special relativity(SR) makes little sense to you on the whole, here is the funny part. It is a gazillion times easier to discover SR all by yourself. On top of that, there is a simple way to derive the SR mathematical equations. This method is not taught in schools, but it is a method that allows you to derive the SR equations in mere minutes, including deriving the Lorentz transformation equations.

  • @SporeMurph
    @SporeMurph 4 ปีที่แล้ว

    Nice film and good discussion.

  • @mikefoylan6612
    @mikefoylan6612 4 ปีที่แล้ว

    Such an amazing lady, an inspiration to all and explaining very well complex things a layperson could easily understand. Thank you for making this presentation available and thank you to Professor Dame Jocelyn Bell Burnell for bringing the Universe down to Earth!