Talks

9337 - 9348 of 18100 Results

Quantum Magnetic Phenomena: From QCD to Dirac semimetals

Igor Shovkovy Western Illinois University

May 26, 2014

PIRSA:14050099
Einstein's equations from qubits

Brian Swingle Brandeis University

May 26, 2014

PIRSA:14050098
Sudakov Form Factor and Von-Hove Singularities

Ira Rothstein Carnegie Mellon University

May 26, 2014

PIRSA:14050096
Wilsonian and Large N Approaches to Non-Fermi Liquids

Liam Fitzpatrick Boston University

May 26, 2014

PIRSA:14050095
Cosmological Dynamics of Space As a Quantum Gravity Condensate

Steffen Gielen University of Sheffield

May 22, 2014

PIRSA:14050135
Vacuogenesis in Discrete Cosomology

Ted Jacobson University of Maryland, College Park

May 22, 2014

PIRSA:14050134
Elements of Quantum Theory from limited Information and complementarity

Philipp Hoehn Okinawa Institute of Science and Technology Graduate University

May 22, 2014

PIRSA:14050133
Lorentzian non-locality and off-shell modes

Mehdi Saravani Goldman Sachs (United States)

May 22, 2014

PIRSA:14050132
Propagation of particles in discrete spacetime: Can high cosmic rays be a result of Quantum Gravity?

Nosiphiwo Zwane University of Eswatini

May 22, 2014

PIRSA:14050131
Projective Statistics in Quantum Gravity

Rafael Sorkin Perimeter Institute for Theoretical Physics

May 22, 2014

PIRSA:14050130
Change of vertex amplitude under coarse graining In Euclidean spinfoam model II

Andrzej Banburski Microsoft Corporation

May 22, 2014

PIRSA:14050129
Change of vertex amplitude under coarse graining In Euclidean spinfoam model I

Linqing Chen ETH Zurich

May 22, 2014

PIRSA:14050128

Quantum Magnetic Phenomena: From QCD to Dirac semimetals

Igor Shovkovy Western Illinois University

May 26, 2014

PIRSA:14050099

Studies of relativistic matter in strong magnetic fields attracted a lot of attention in recent years. Such studies are primarily motivated by the phenomenology of compact stars, the evolution of the Early Universe, and the physics of relativistic heavy ion collisions. Additionally, the outcomes of such research result in deeper understanding of a large class of novel condensed matter materials (e.g., graphene and Dirac semimetals. I will review recent surprises, ideas, and the progress made in understanding physical properties of relativistic matter in strong magnetic fields.
Einstein's equations from qubits

Brian Swingle Brandeis University

May 26, 2014

PIRSA:14050098

I will outline a path by which a semi-classical geometry obeying Einstein's equations emerges holographically from elementary quantum mechanical objects undergoing local dynamics. The key idea is that entanglement between the quantum degrees of freedom leads to the emergence of a dynamical geometry, that entanglement is the fabric of spacetime. Furthermore, although important technical challenges remain, I will argue that the conceptual ideas are in place. The core of the talk will be two new results that are crucial to this program, one establishing a new representation of entanglement in RG tensor networks and the other showing that the equivalence principle is encoded in the universality of entanglement.
Sudakov Form Factor and Von-Hove Singularities

Ira Rothstein Carnegie Mellon University

May 26, 2014

PIRSA:14050096

In this talk I will discuss the analogies between high energy scattering of nucleons and Fermi Liquid theory. In particular I will elucidate the relation between the rapidity renormalization group utilized in such observables as transverse momentum distribution and the effect of Von-Hove singularities on the low energy properties of metals.
Wilsonian and Large N Approaches to Non-Fermi Liquids

Liam Fitzpatrick Boston University

May 26, 2014

PIRSA:14050095

We study the problem of metals near a quantum critical point using a local Wilsonian effective field theory of Fermi surface fermions coupled to massless boson (i.e. order parameter) fields, in particular in a large N limit where the boson is matrix-valued. We focus on regions of parameter space where the boson dresses the fermions into a non-Fermi liquid while the bosons are approximately controlled by the Wilson-Fisher fixed point.
Cosmological Dynamics of Space As a Quantum Gravity Condensate

Steffen Gielen University of Sheffield

May 22, 2014

PIRSA:14050135
Vacuogenesis in Discrete Cosomology

Ted Jacobson University of Maryland, College Park

May 22, 2014

PIRSA:14050134
Elements of Quantum Theory from limited Information and complementarity

Philipp Hoehn Okinawa Institute of Science and Technology Graduate University

May 22, 2014

PIRSA:14050133
Lorentzian non-locality and off-shell modes

Mehdi Saravani Goldman Sachs (United States)

May 22, 2014

PIRSA:14050132
Propagation of particles in discrete spacetime: Can high cosmic rays be a result of Quantum Gravity?

Nosiphiwo Zwane University of Eswatini

May 22, 2014

PIRSA:14050131
Projective Statistics in Quantum Gravity

Rafael Sorkin Perimeter Institute for Theoretical Physics

May 22, 2014

PIRSA:14050130

To the extent that spacetime remains a manifold M on small scales, excitations of the spatial topology can function as particles called topological geons. In a first quantized theory of topological geons (aka continuum quantum gravity without topology change), different irreducible unitary representations of the mapping-class group G of M, yield different superselection sectors of the theory. In some of these sectors the geons behave as fermions, even though gravitons themselves are of course bosons. A still more exotic possibility is "projective statistics", where the operators that permute identical geons only preserve group multiplication up to a phase-factor that cannot be eliminated. (Such a representation must be nonabelian.) I will describe a simple example of this phenomenon with four RP^3 geons.
Change of vertex amplitude under coarse graining In Euclidean spinfoam model II

Andrzej Banburski Microsoft Corporation

May 22, 2014

PIRSA:14050129
Change of vertex amplitude under coarse graining In Euclidean spinfoam model I

Linqing Chen ETH Zurich

May 22, 2014

PIRSA:14050128

Title	Date	Collection	Type	Info
Quantum Magnetic Phenomena: From QCD to Dirac semimetals	2014‑05‑26	Low Energy Challenges for High Energy Physicists	Conference	View details
Einstein's equations from qubits	2014‑05‑26	Low Energy Challenges for High Energy Physicists	Conference	View details
Sudakov Form Factor and Von-Hove Singularities	2014‑05‑26	Low Energy Challenges for High Energy Physicists	Conference	View details
Wilsonian and Large N Approaches to Non-Fermi Liquids	2014‑05‑26	Low Energy Challenges for High Energy Physicists	Conference	View details
Cosmological Dynamics of Space As a Quantum Gravity Condensate	2014‑05‑22	Quantum Gravity Day 2014	Conference	View details
Vacuogenesis in Discrete Cosomology	2014‑05‑22	Quantum Gravity Day 2014	Conference	View details
Elements of Quantum Theory from limited Information and complementarity	2014‑05‑22	Quantum Gravity Day 2014	Conference	View details
Lorentzian non-locality and off-shell modes	2014‑05‑22	Quantum Gravity Day 2014	Conference	View details
Propagation of particles in discrete spacetime: Can high cosmic rays be a result of Quantum Gravity?	2014‑05‑22	Quantum Gravity Day 2014	Conference	View details
Projective Statistics in Quantum Gravity	2014‑05‑22	Quantum Gravity Day 2014	Conference	View details
Change of vertex amplitude under coarse graining In Euclidean spinfoam model II	2014‑05‑22	Quantum Gravity Day 2014	Conference	View details
Change of vertex amplitude under coarse graining In Euclidean spinfoam model I	2014‑05‑22	Quantum Gravity Day 2014	Conference	View details

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Format results

Quantum Magnetic Phenomena: From QCD to Dirac semimetals

Einstein's equations from qubits

Sudakov Form Factor and Von-Hove Singularities

Wilsonian and Large N Approaches to Non-Fermi Liquids

Cosmological Dynamics of Space As a Quantum Gravity Condensate

Vacuogenesis in Discrete Cosomology

Elements of Quantum Theory from limited Information and complementarity

Lorentzian non-locality and off-shell modes

Propagation of particles in discrete spacetime: Can high cosmic rays be a result of Quantum Gravity?

Projective Statistics in Quantum Gravity

Change of vertex amplitude under coarse graining In Euclidean spinfoam model II

Change of vertex amplitude under coarse graining In Euclidean spinfoam model I

Quantum Magnetic Phenomena: From QCD to Dirac semimetals

Einstein's equations from qubits

Sudakov Form Factor and Von-Hove Singularities

Wilsonian and Large N Approaches to Non-Fermi Liquids

Cosmological Dynamics of Space As a Quantum Gravity Condensate

Vacuogenesis in Discrete Cosomology

Elements of Quantum Theory from limited Information and complementarity

Lorentzian non-locality and off-shell modes

Propagation of particles in discrete spacetime: Can high cosmic rays be a result of Quantum Gravity?

Projective Statistics in Quantum Gravity

Change of vertex amplitude under coarse graining In Euclidean spinfoam model II

Change of vertex amplitude under coarse graining In Euclidean spinfoam model I