Talks

10333 - 10344 of 16754 Results

12/13 PSI - Explorations in Condensed Matter Lecture 14

Guifre Vidal Alphabet (United States)

Xiao-Gang Wen Massachusetts Institute of Technology (MIT) - Department of Physics

April 25, 2013

PIRSA:13040060

Condensed Matter
Electronic Liquid Crystalline Phases of Highly Correlated Electronic Systems

April 24, 2013

PIRSA:13040116

Condensed Matter
12/13 PSI - Explorations in String Theory Lecture 13

Pedro Vieira Perimeter Institute for Theoretical Physics

April 24, 2013

PIRSA:13040100

Quantum Fields and Strings
12/13 PSI - Explorations in Cosmology Lecture 13

Matthew Johnson York University

April 24, 2013

PIRSA:13040078

Cosmology
12/13 PSI - Explorations in Condensed Matter Lecture 13

Guifre Vidal Alphabet (United States)

Xiao-Gang Wen Massachusetts Institute of Technology (MIT) - Department of Physics

April 24, 2013

PIRSA:13040059

Condensed Matter
12/13 PSI - Explorations in String Theory Lecture 12

Pedro Vieira Perimeter Institute for Theoretical Physics

April 23, 2013

PIRSA:13040099

Quantum Fields and Strings
Quantum transport in one dimension: from integrability to many-body localization and topology

Joel Moore University of California, Berkeley

April 23, 2013

PIRSA:13040125

Condensed Matter
On memory in exponentially expanding spaces

Douglas Stanford Stanford University

April 23, 2013

PIRSA:13040127

Cosmology
12/13 PSI - Explorations in Cosmology Lecture 12

Matthew Johnson York University

April 23, 2013

PIRSA:13040077

Cosmology
12/13 PSI - Explorations in Condensed Matter Lecture 12

Guifre Vidal Alphabet (United States)

Xiao-Gang Wen Massachusetts Institute of Technology (MIT) - Department of Physics

April 23, 2013

PIRSA:13040058

Condensed Matter
The continuum limit of tensor networks: a path integral representation

David Jennings Imperial College London

April 22, 2013

PIRSA:13040113

Quantum Foundations
12/13 PSI - Explorations in String Theory Lecture 11

Pedro Vieira Perimeter Institute for Theoretical Physics

April 22, 2013

PIRSA:13040098

Quantum Fields and Strings

12/13 PSI - Explorations in Condensed Matter Lecture 14

Guifre Vidal Alphabet (United States)

Xiao-Gang Wen Massachusetts Institute of Technology (MIT) - Department of Physics

April 25, 2013

PIRSA:13040060

Condensed Matter
Electronic Liquid Crystalline Phases of Highly Correlated Electronic Systems

April 24, 2013

PIRSA:13040116

Condensed Matter

In one extreme, where the interactions are sufficiently weak compared to the interactions, electrons form a “Fermi liquid” – the state that accounts for the properties of simple metals. In the other extreme, where the interactions are dominant, the electrons form various “Mott” insulating or “Wigner crystalline” phases, often characterized by broken spatial and/or magnetic symmetries. Corresponding charge and/or magnetically ordered insulating phases are common in nature. Between these two extremes lie highly correlated electronic fluids, and correspondingly a host of interesting and perplexing materials, including such diverse systems as the cuprate and iron-based high temperature superconductors, the failed metamagnet Sr3Ru2O7, and a variety of quantum Hall fluids. Some insight into electron fluids in this rich intermediate coupling regime can be obtained from viewing them as partially melted electron solids, rather than as strongly interacting gases. Here, analogies with the liquid crystalline phases of complex classical fluids provide useful guidance for a new approach to this key problem in condensed matter physics.
12/13 PSI - Explorations in String Theory Lecture 13

Pedro Vieira Perimeter Institute for Theoretical Physics

April 24, 2013

PIRSA:13040100

Quantum Fields and Strings
12/13 PSI - Explorations in Cosmology Lecture 13

Matthew Johnson York University

April 24, 2013

PIRSA:13040078

Cosmology
12/13 PSI - Explorations in Condensed Matter Lecture 13

Guifre Vidal Alphabet (United States)

Xiao-Gang Wen Massachusetts Institute of Technology (MIT) - Department of Physics

April 24, 2013

PIRSA:13040059

Condensed Matter
12/13 PSI - Explorations in String Theory Lecture 12

Pedro Vieira Perimeter Institute for Theoretical Physics

April 23, 2013

PIRSA:13040099

Quantum Fields and Strings
Quantum transport in one dimension: from integrability to many-body localization and topology

Joel Moore University of California, Berkeley

April 23, 2013

PIRSA:13040125

Condensed Matter

Recent advances in analytical theory and numerical methods enable some long-standing questions about transport in one dimension to be answered; these questions are closely related to transport experiments in quasi-1D compounds. The spinless fermion chain with nearest-neighbor interactions at half-filling, or equivalently the XXZ model in zero magnetic field, is an example of an integrable system in which no conventional conserved quantity forces dissipationless transport (Drude weight); we show that there is nevertheless a Drude weight and that at some points its contribution is from a new type of conserved quantity recently constructed by Prosen. Adding an integrability-breaking perturbation leads to a scaling theory of conductivity at low temperature. Adding disorder, we study the question of how Anderson localization is modified by interactions when the system remains fully quantum coherent ("many-body localization"). We find that even weak interactions are a singular perturbation on some quantities: entanglement grows slowly but without limit, suggesting that dynamics in the possible many-body localized phase are glass-like. If time permits, some results on the fractional Luttinger's theorem and the 1D limit of quantum Hall states will be presented.
On memory in exponentially expanding spaces

Douglas Stanford Stanford University

April 23, 2013

PIRSA:13040127

Cosmology

I will present recent work, done in collaboration with Daniel Roberts, on the global memory of initial conditions that is sometimes, but not always, retained by fluctuating fields on de Sitter space, Euclidean anti de Sitter space, and regular infinite trees. I will discuss applications to the structure of configuration space in de Sitter space and eternal inflation.
12/13 PSI - Explorations in Cosmology Lecture 12

Matthew Johnson York University

April 23, 2013

PIRSA:13040077

Cosmology
12/13 PSI - Explorations in Condensed Matter Lecture 12

Guifre Vidal Alphabet (United States)

Xiao-Gang Wen Massachusetts Institute of Technology (MIT) - Department of Physics

April 23, 2013

PIRSA:13040058

Condensed Matter
The continuum limit of tensor networks: a path integral representation

David Jennings Imperial College London

April 22, 2013

PIRSA:13040113

Quantum Foundations

I will discuss a path-integral representation of continuum tensor networks that extends the continuous MPS class for 1-D quantum fields to arbitrary spatial dimensions while encoding desirable symmetries. The physical states can be interpreted as arising through a continuous measurement process by a lower dimensional virtual field with Lorentz symmetry. The resultant physical states naturally obey entropy area laws, with the expectation values of observables determined by the dissipative dynamics of the boundary field. The class offers the prospect of powerful new analytical and computational tools to describe the physics of strongly interacting field systems.
12/13 PSI - Explorations in String Theory Lecture 11

Pedro Vieira Perimeter Institute for Theoretical Physics

April 22, 2013

PIRSA:13040098

Quantum Fields and Strings

Title	Date	Collection	Type	Info
12/13 PSI - Explorations in Condensed Matter Lecture 14	2013‑04‑25	12/13 PSI - Explorations in Condensed Matter	Course	View details
Electronic Liquid Crystalline Phases of Highly Correlated Electronic Systems	2013‑04‑24	Colloquium	Scientific Series	View details
12/13 PSI - Explorations in String Theory Lecture 13	2013‑04‑24	12/13 PSI - Eplorations in String Theory	Course	View details
12/13 PSI - Explorations in Cosmology Lecture 13	2013‑04‑24	12/13 PSI - Explorations in Cosmology	Course	View details
12/13 PSI - Explorations in Condensed Matter Lecture 13	2013‑04‑24	12/13 PSI - Explorations in Condensed Matter	Course	View details
12/13 PSI - Explorations in String Theory Lecture 12	2013‑04‑23	12/13 PSI - Eplorations in String Theory	Course	View details
Quantum transport in one dimension: from integrability to many-body localization and topology	2013‑04‑23	Quantum Matter	Scientific Series	View details
On memory in exponentially expanding spaces	2013‑04‑23	Cosmology and Gravitation	Scientific Series	View details
12/13 PSI - Explorations in Cosmology Lecture 12	2013‑04‑23	12/13 PSI - Explorations in Cosmology	Course	View details
12/13 PSI - Explorations in Condensed Matter Lecture 12	2013‑04‑23	12/13 PSI - Explorations in Condensed Matter	Course	View details
The continuum limit of tensor networks: a path integral representation	2013‑04‑22	Perimeter Institute Quantum Discussions	Scientific Series	View details
12/13 PSI - Explorations in String Theory Lecture 11	2013‑04‑22	12/13 PSI - Eplorations in String Theory	Course	View details

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