Talks

10633 - 10644 of 19186 Results

Universal incoherent metallic transport

Sean Hartnoll Stanford University

May 27, 2014

PIRSA:14050102
Effective field theory of two-dimensional nonrelativistic chiral superfluid

Sergej Moroz University of Washington

May 27, 2014

PIRSA:14050101
Visualizing Quantum Matter

May 27, 2014

PIRSA:14050100
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

Universal incoherent metallic transport

Sean Hartnoll Stanford University

May 27, 2014

PIRSA:14050102

In an incoherent metal, transport is controlled by the collective diffusion of energy and charge rather than by quasiparticle or momentum relaxation. We explore the possibility of a universal bound D \gtrsim \hbar v_F^2 /(k_B T) on the underlying diffusion constants in an incoherent metal. Such a bound is loosely motivated by results from holographic duality, the uncertainty principle and from measurements of diffusion in strongly interacting non-metallic systems. Metals close to saturating this bound are shown to have a linear in temperature resistivity with an underlying dissipative timescale matching that recently deduced from experimental data on a wide range of metals. The phenomenology of universal incoherent transport is found to reproduce various further observations in strongly correlated metals, and motivates direct probes of diffusive processes and measurements of charge susceptibilities. We suggest that this bound may be responsible for the ubiquitous appearance of high temperature regimes in metals with T-linear resistivity.
Effective field theory of two-dimensional nonrelativistic chiral superfluid

Sergej Moroz University of Washington

May 27, 2014

PIRSA:14050101

Due to the current search of Majorana fermions, the physics of two-dimensional identical fermions with short-range p-wave interactions is of considerable interest. My talk will be about the effective theory of a chiral p+ip fermionic superfluid at zero temperature. This theory naturally incorporates the parity and time reversal violating effects such as the Hall viscosity and the edge current. I will present some applications of this theory such as the linear response to external electromagnetic and gravitational fields and the density profile of an isolated vortex. Finally, the dual gauge reformulation of this theory will be presented.
Visualizing Quantum Matter

May 27, 2014

PIRSA:14050100

Recently developed techniques allow imaging of electronic quantum matter directly at the atomic scale. I will introduce the basic principles and describe the set of observables available from these techniques. As examples, I will survey visualization of exotic forms of electronic quantum matter including heavy fermions, quantum critical electrons, topological surface states, electronic liquid crystals, and high temperature superconductors.
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

Title	Date	Collection	Type	Info
Universal incoherent metallic transport	2014‑05‑27	Low Energy Challenges for High Energy Physicists	Conference	View details
Effective field theory of two-dimensional nonrelativistic chiral superfluid	2014‑05‑27	Low Energy Challenges for High Energy Physicists	Conference	View details
Visualizing Quantum Matter	2014‑05‑27	Low Energy Challenges for High Energy Physicists	Conference	View details
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

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Format results

Universal incoherent metallic transport

Effective field theory of two-dimensional nonrelativistic chiral superfluid

Visualizing Quantum Matter

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?

Universal incoherent metallic transport

Effective field theory of two-dimensional nonrelativistic chiral superfluid

Visualizing Quantum Matter

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?