2023-09-15
14:36 |
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On the Origin of Time
/ Hertog, Thomas (speaker) (KU Leuven)
Perhaps the biggest question Stephen Hawking tried to answer in his extraordinary career was how the universe could have created conditions so perfectly hospitable to life.Pondering this mystery led him to study its big bang origin, but his early work ran into a crisis when the math predicted many big bangs producing many universes, most far too bizarre to harbor life.Holed up in theoretical physics departments across the globe, Hawking and I worked shoulder to shoulder for twenty years, to develop a novel quantum framework for early universe cosmology that could account for the emergence of life. At the heart of our cosmogony lies a theory of the beginning that predicts that time and indeed physics itself fade away back into the big bang.In this colloquium I recount our quest to get a grips on the origin of time, and the bold new take on some of the universe’s fundamentals we were led to. Short bio: Thomas Hertog is a theoretical cosmologist at the KU Leuven. [...]
2023 - 1:09:18.
CERN Colloquium
External link: Event details
In : On the Origin of Time
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დეტალური ჩანაწერი - მსგავსი ჩანაწერები
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2023-07-28
15:54 |
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Quantum matter and clock: from emergent phenomena to fundamental physics
/ Ye, Jun (speaker) (University of Colorado, Boulder)
Precise quantum state engineering, many-body physics, and innovative laser technology are revolutionizing the performance of atomic clocks and metrology, providing opportunities to explore emerging phenomena and probe fundamental physics. Recent advances include precise control of many-body interactions to achieve high accuracy, measurement of gravitation time dilation across a few hundred micrometers, and employment of spin squeezing for clock comparison..
2023 - 1:31:19.
CERN Colloquium
External link: Event details
In : Quantum matter and clock: from emergent phenomena to fundamental physics
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დეტალური ჩანაწერი - მსგავსი ჩანაწერები
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2023-06-26
13:57 |
დეტალური ჩანაწერი - მსგავსი ჩანაწერები
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2023-06-09
17:44 |
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Latest Results from AMS on the International Space Station
/ Ting, Samuel (speaker) (Massachusetts Inst. of Technology (US))
Data taking with AMS at CERN began on 25th May twelve years ago. Prof Ting will summarize all the discoveries accumulated over the past twelve years from 210 billion cosmic rays up to energies of trillion electron volts, including some new results..
2023 - 1:30:27.
CERN Colloquium
External link: Event details
In : Latest Results from AMS on the International Space Station
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დეტალური ჩანაწერი - მსგავსი ჩანაწერები
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2023-03-14
11:04 |
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Long baseline atom interferometry
/ Kasevich, Mark (speaker) (Stanford University)
Recent advances in methods to coherently manipulate atomic de Broglie waves have enabled a new generation of atom interferometers with unique capability to address outstanding fundamental science challenges. These challenges include detection of gravitational radiation at frequencies below 1 Hz, searches for ultralight dark matter, and new tests of gravitational physics. This talk will describe recent progress in this field and outline future scientific opportunities.This is special Colloquium part of the “Terrestrial Very-Long-Baseline Atom Interferometry Workshop” (13-14 March 2023) with a short introduction to the Workshop at 08:45.The Colloquium is officially starting at 09:15..
2023 - 0:58:09.
CERN Colloquium
External link: Event details
In : Long baseline atom interferometry
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დეტალური ჩანაწერი - მსგავსი ჩანაწერები
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2023-02-24
10:27 |
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The New Science of the Heart
/ Harding, Sian (speaker) (Imperial College London)
Sian Harding is Emeritus Professor at Imperial College London. She has been Head of the Cardiovascular Division there, and Director of the British Heart Foundation Cardiovascular Regenerative Medicine Centre. [...]
2023 - 1:08:16.
CERN Colloquium
External link: Event details
In : The New Science of the Heart
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დეტალური ჩანაწერი - მსგავსი ჩანაწერები
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2023-01-30
08:38 |
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The science and technology of DUNE
/ Terranova, Francesco (speaker) (Universita & INFN, Milano-Bicocca (IT))
The DUNE experiment is one of the most ambitious projects ever conceived in neutrino physics and is currently under construction at Fermilab and SURF. Its science addresses neutrino oscillations with a wide-band accelerator neutrino beam, together with astroparticles, multimessenger physics, and physics beyond the Standard Model using natural sources. [...]
2023 - 0:54:47.
CERN Colloquium
External link: Event details
In : The science and technology of DUNE
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დეტალური ჩანაწერი - მსგავსი ჩანაწერები
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2022-12-16
15:23 |
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Prospects for Fusion Energy using Magnetic Confinement
/ Zohm, Hartmut (speaker) (Max-Planck-Institut für Plasmaphysik) ; Mumgaard, Bob (speaker) (Commonwealth Fusion System)
Nuclear Fusion is the process that powers the stars. Research to make this process accessible as an energy source on Earth by confining a hot hydrogenic plasma in magnetic fields has made substantial progress. In this talk, we will first introduce the principles of magnetic confinement and then review the present status of research. [...]
2022 - 1:10:17.
CERN Colloquium
External link: Event details
In : Prospects for Fusion Energy using Magnetic Confinement
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დეტალური ჩანაწერი - მსგავსი ჩანაწერები
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2022-11-18
12:47 |
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The Practice and Sociology of Natural Science
/ Peebles, James (speaker) (Princeton University)
Lessons about research in the natural sciences can be drawn from the sociology of science. For example, in 1960 Einstein's general theory of relativity was standard and accepted physics, and elements of it were on the qualifying exam I wrote as a graduate student. [...]
2022 - 1:24:34.
CERN Colloquium
External link: Event details
In : The Practice and Sociology of Natural Science
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დეტალური ჩანაწერი - მსგავსი ჩანაწერები
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2022-10-31
08:35 |
Small Cosmological Constants in String Theory
/ McAllister, Liam (speaker) (Cornell University)
I will present a construction of vacua of string theory in which the magnitude of the cosmological constant is exponentially small. The vacua are supersymmetric AdS solutions in flux compactifications of type IIB string theory, with all moduli stabilized. The vacuum energy is small because we ensure the exact cancellation of all perturbative contributions, through an explicit choice of integer parameters determined by the topology and quantized fluxes. The nonperturbative contributions that remain are exponential in these integers. Finding cosmological constants of small magnitude in this landscape is exponentially easier than in Bousso-Polchinski landscapes, but extending our approach to positive cosmological constants in realistic universes is a difficult open problem..
2022 - 1:15:34.
Theory Colloquia
External link: Event details
In : Small Cosmological Constants in String Theory
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დეტალური ჩანაწერი - მსგავსი ჩანაწერები
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