Talks

10909 - 10920 of 18093 Results

Improved test of the Equivalence Principle as a probe of quantum gravity

James Overduin Towson University

Daniel Sudarsky Universidad Nacional Autónoma De Mexico (UNAM)

October 22, 2012

PIRSA:12100127

General Relativity & Quantum Cosmology
Quantum Field Theory - Lecture 10B

Konstantin Zarembo Nordic Institute for Theoretical Physics

October 22, 2012

PIRSA:12100071

High Energy Physics
Condensed Matter - Lecture 10

Assa Auerbach Technion – Israel Institute of Technology

October 22, 2012

PIRSA:12100035

Condensed Matter
Matter-wave clocks

Holger Mueller University of California, Berkeley

October 22, 2012

PIRSA:12100124

General Relativity & Quantum Cosmology
Quantum Field Theory - Lecture 10A

Konstantin Zarembo Nordic Institute for Theoretical Physics

October 22, 2012

PIRSA:12100017

High Energy Physics
Self-localization of a single hole in Mott antiferromagnets

Zheng-Yu Weng Tsinghua University

October 19, 2012

PIRSA:12100077

Condensed Matter
Quantum Field Theory - Lecture 9B

Konstantin Zarembo Nordic Institute for Theoretical Physics

October 19, 2012

PIRSA:12100070

High Energy Physics
Condensed Matter - Lecture 9

Assa Auerbach Technion – Israel Institute of Technology

October 19, 2012

PIRSA:12100032

Condensed Matter
Quantum Field Theory - Lecture 9A

Konstantin Zarembo Nordic Institute for Theoretical Physics

October 19, 2012

PIRSA:12100014

High Energy Physics
Understanding black hole entropy through the renormalization group

Alejandro Satz

October 18, 2012

PIRSA:12100053
Towards an Asymptotically AdS Description of Heavy Ion Collisions

Hans Bantilan Princeton University

October 18, 2012

PIRSA:12100076

High Energy Physics
Quantum Field Theory - Lecture 8B

Konstantin Zarembo Nordic Institute for Theoretical Physics

October 18, 2012

PIRSA:12100069

High Energy Physics

Improved test of the Equivalence Principle as a probe of quantum gravity

James Overduin Towson University

Daniel Sudarsky Universidad Nacional Autónoma De Mexico (UNAM)

October 22, 2012

PIRSA:12100127

General Relativity & Quantum Cosmology

Current approaches to the problems of dark energy and unification generically predict the existence of new fields (quintessence dilatons etc.) that will in principle couple with different strengths to different standard-model fields. These different coupling strengths will cause test materials of different compositions to fall at different rates in the same gravitational field violating the Equivalence Principle the foundation of General Relativity. A sufficiently sensitive measurement of the relative accelerations of different test bodies in orbit around the earth could detect or rule out these new fields complementing existing or proposed experiments in high-energy physics (colliders) and observational cosmology (space telescopes). To do this convincingly such an experiment needs at least three test materials spanning the largest possible volume in the space of atomic and molecular properties and a sensitivity to EP violations of as little as a part in $10^{18}$ (attainable only in space and at low temperatures). I discuss one such experiment the Satellite Test of the Equivalence Principle which has reached an advanced stage of prototype development and is currently awaiting a path toward a flight program.
Quantum Field Theory - Lecture 10B

Konstantin Zarembo Nordic Institute for Theoretical Physics

October 22, 2012

PIRSA:12100071

High Energy Physics
Condensed Matter - Lecture 10

Assa Auerbach Technion – Israel Institute of Technology

October 22, 2012

PIRSA:12100035

Condensed Matter
Matter-wave clocks

Holger Mueller University of California, Berkeley

October 22, 2012

PIRSA:12100124

General Relativity & Quantum Cosmology
Quantum Field Theory - Lecture 10A

Konstantin Zarembo Nordic Institute for Theoretical Physics

October 22, 2012

PIRSA:12100017

High Energy Physics
Self-localization of a single hole in Mott antiferromagnets

Zheng-Yu Weng Tsinghua University

October 19, 2012

PIRSA:12100077

Condensed Matter

Anderson localization - quantum suppression of carrier diffusion due to disorders - is a basic notion of modern condensed matter physics. Here I will talk about a novel localization phenomenon totally contrary to this common wisdom. Strikingly, it is purely of strong interaction origin and occurs without the assistance of disorders. Specifically, by combined numerical (density matrix renormalization group) method and analytic analysis, we show that a single hole injected in a quantum antiferromagnetic ladder is generally self-localized even though the system respects the translational symmetry. The localization length is found to monotonically decrease with the increase of leg number, indicating stronger self-localization in the two-dimensional limit. We find that a peculiar coupling between the doped charge and the quantum spin background causes quantum interference among different hole paths. The latter brings the hole's itinerant motion to a halt, a phenomenological analogy to Anderson localization. Our findings are opposite to the common belief of the quasiparticle picture for the doped hole and unveil a completely new paradigm for lightly doped Mott insulators.
Quantum Field Theory - Lecture 9B

Konstantin Zarembo Nordic Institute for Theoretical Physics

October 19, 2012

PIRSA:12100070

High Energy Physics
Condensed Matter - Lecture 9

Assa Auerbach Technion – Israel Institute of Technology

October 19, 2012

PIRSA:12100032

Condensed Matter
Quantum Field Theory - Lecture 9A

Konstantin Zarembo Nordic Institute for Theoretical Physics

October 19, 2012

PIRSA:12100014

High Energy Physics
Understanding black hole entropy through the renormalization group

Alejandro Satz

October 18, 2012

PIRSA:12100053

It is known that the entanglement entropy of quantum fields on the black hole background contributes to the Bekenstein-Hawking entropy,and that its divergences can be absorbed into the renormalization of gravitational couplings. By introducing a Wilsonian cutoff scale and the concepts of the renormalization group, we can expand this observation into a broader framework for understanding black hole entropy. At a given RG scale, two contributions to the black hole entropy can be identified: the "gravitational" contribution coming from the running effective gravitational action, and the entanglement entropy of the quantum degrees of freedom below the cutoff scale. At different RG scales the balance is different, though the total black hole entropy is invariant. I will describe this picture for free fields, considering both minimal and non-mininal coupling, and discuss the extension to interacting fields and the difficulties it raises.
Towards an Asymptotically AdS Description of Heavy Ion Collisions

Hans Bantilan Princeton University

October 18, 2012

PIRSA:12100076

High Energy Physics

I will discuss recent work in simulating asymptotically anti-de Sitter spacetimes, and its relation to heavy ion collider physics. For this purpose, I intend to focus on a class of oblately deformed black hole spacetime solutions. For each of these solutions, I will map the gravitational metric in the spacetime bulk to a stress tensor one-point function of the conformal field theory defined on the spacetime boundary. During the ring-down process, wherein the deformed black hole settles down to the AdS analog of the Schwarzschild solution, I will exhibit evidence that the dual CFT stress tensor on the boundary is that of an N=4 SYM fluid, even for black holes of significant deformation well outside the perturbative regime. We will conformally map the boundary fluid onto a real-world fluid in Minkowski space, and discover a temperature profile which can be thought of as approximating that of a head-on heavy ion collision at its moment of impact. I will close with a description of recent parallel explorations.
Quantum Field Theory - Lecture 8B

Konstantin Zarembo Nordic Institute for Theoretical Physics

October 18, 2012

PIRSA:12100069

High Energy Physics

Title	Date	Collection	Type	Info
Improved test of the Equivalence Principle as a probe of quantum gravity	2012‑10‑22	Experimental Search for Quantum Gravity 2012	Conference	View details
Quantum Field Theory - Lecture 10B	2012‑10‑22	12/13 PSI - Quantum Field Theory 1	Course	View details
Condensed Matter - Lecture 10	2012‑10‑22	12/13 PSI - Condensed Matter	Course	View details
Matter-wave clocks	2012‑10‑22	Experimental Search for Quantum Gravity 2012	Conference	View details
Quantum Field Theory - Lecture 10A	2012‑10‑22	12/13 PSI - Quantum Field Theory 1	Course	View details
Self-localization of a single hole in Mott antiferromagnets	2012‑10‑19	Quantum Matter	Scientific Series	View details
Quantum Field Theory - Lecture 9B	2012‑10‑19	12/13 PSI - Quantum Field Theory 1	Course	View details
Condensed Matter - Lecture 9	2012‑10‑19	12/13 PSI - Condensed Matter	Course	View details
Quantum Field Theory - Lecture 9A	2012‑10‑19	12/13 PSI - Quantum Field Theory 1	Course	View details
Understanding black hole entropy through the renormalization group	2012‑10‑18	Quantum Gravity	Scientific Series	View details
Towards an Asymptotically AdS Description of Heavy Ion Collisions	2012‑10‑18	Strong Gravity	Scientific Series	View details
Quantum Field Theory - Lecture 8B	2012‑10‑18	12/13 PSI - Quantum Field Theory 1	Course	View details

Supported by

Format results

Improved test of the Equivalence Principle as a probe of quantum gravity

Quantum Field Theory - Lecture 10B

Condensed Matter - Lecture 10

Matter-wave clocks

Quantum Field Theory - Lecture 10A

Self-localization of a single hole in Mott antiferromagnets

Quantum Field Theory - Lecture 9B

Condensed Matter - Lecture 9

Quantum Field Theory - Lecture 9A

Understanding black hole entropy through the renormalization group

Towards an Asymptotically AdS Description of Heavy Ion Collisions

Quantum Field Theory - Lecture 8B

Improved test of the Equivalence Principle as a probe of quantum gravity

Quantum Field Theory - Lecture 10B

Condensed Matter - Lecture 10

Matter-wave clocks

Quantum Field Theory - Lecture 10A

Self-localization of a single hole in Mott antiferromagnets

Quantum Field Theory - Lecture 9B

Condensed Matter - Lecture 9

Quantum Field Theory - Lecture 9A

Understanding black hole entropy through the renormalization group

Towards an Asymptotically AdS Description of Heavy Ion Collisions

Quantum Field Theory - Lecture 8B