Conference

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Emergence of p+ip topological superconducting ground state in infinite-U Hubbard model on honeycomb lattice

Zheng-Cheng Gu Chinese University of Hong Kong

February 10, 2014

PIRSA:14020113
Aharonov-Bohm effect in symmetry protected states

Luiz Santos Emory University

February 10, 2014

PIRSA:14020126
Topological phases in graphene

Zlatko Papic University of Leeds

February 10, 2014

PIRSA:14020134
Challenges 2

January 30, 2014

PIRSA:14010116
Quantum Fields and Strings

Robert Myers Perimeter Institute for Theoretical Physics

January 30, 2014

PIRSA:14010114
Particle Physics: Expanding Our Perimeter
- Natalia Toro Stanford University
- Philip Schuster Stanford University
January 30, 2014

PIRSA:14010113
Constructing Quantum Space Time

Bianca Dittrich Perimeter Institute for Theoretical Physics

January 30, 2014

PIRSA:14010112
What’s Happening in Cosmology?
- Kendrick Smith Perimeter Institute for Theoretical Physics
- Latham Boyle University of Edinburgh
January 30, 2014

PIRSA:14010111
Challenges 1

January 30, 2014

PIRSA:14010115
Experimental Metaphysics

Robert Spekkens Perimeter Institute for Theoretical Physics

January 30, 2014

PIRSA:14010110
What A Quantumful World

Hector Bombin PsiQuantum Corp.

January 30, 2014

PIRSA:14010109
Emergence and Entanglement: A New World of Condensed Matter Physics

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

January 30, 2014

PIRSA:14010108

Emergence of p+ip topological superconducting ground state in infinite-U Hubbard model on honeycomb lattice

Zheng-Cheng Gu Chinese University of Hong Kong

February 10, 2014

PIRSA:14020113

In this talk, I will show the emergence of p+ip topological superconducting ground state in infinite-U Hubbard model on honeycomb lattice, from both state-of-art Grassmann tensor-network numerical approach and quantum field theory approach.
Aharonov-Bohm effect in symmetry protected states

Luiz Santos Emory University

February 10, 2014

PIRSA:14020126

Symmetry protected topological (SPT) states are generalizations of topological band insulators to interacting systems. They possess a gapped bulk spectrum together with symmetry protected edge states, with no topological order. There has been recently an intense effort to classify SPT states both in terms of group cohomology as well as from the point of view of effective field theories. An interesting related question is to understand the structute of lattice models that realize SPT physics. In this talk, I shall present a class of lattice models describing the egde of non-chiral two-dimensional bosonic SPT states protected by Z_N symmetry. A crucial aspect of the construction relies on finding the correct non-trivial Z_N symmetry realizations on the edge consistent with all the possible classes of SPT states. Then I shall discuss the Aharonov-Bohm effect on the many-body SPT state by studying this many-body effect on the aforementioned gapless edge states. The effect of a Z_N gauge flux on the egde states is formulated in terms of twisted boundary conditions of the lattice models. The low energy spectral shifts due to the gauge flux are shown to depend on each of the SPT classes in a predictable way. I shall, in the course of this talk, present numerical results of exact diagonalization of our lattice Hamiltonians that support this analysis. This work is done in collaboration with Juven Wang and
appears in arXiv:1310.8291.
Topological phases in graphene

Zlatko Papic University of Leeds

February 10, 2014

PIRSA:14020134

As realized for the first time in 1980s, quantum many-body systems in reduced spatial dimensions can sometimes undergo a special type of ordering which does not break any symmetry but introduces long-range entanglement and emergent excitations that have radically different properties from their original constituents. Most of our experimental knowledge of such ``topological" phases of matter comes from studies of two-dimensional electron gases in GaAs semiconductors in high magnetic fields and at low temperatures. In the first part of this talk, I will give an introduction to these systems and review some latest theoretical developments related to their entanglement properties. In the second part, I will discuss new possibilities
for experimental realizations of topological phases in bilayer graphene. I will present evidence that this material supports an ``even-denominator" fractional state, related to the Moore-Read state, whose observation has recently been reported. Finally, I will outline several proposals based on the tunability of the electron-electron interactions in bilayer graphene which might enable further experimental progress beyond GaAs.
Challenges 2

January 30, 2014

PIRSA:14010116
Quantum Fields and Strings

Robert Myers Perimeter Institute for Theoretical Physics

January 30, 2014

PIRSA:14010114
Particle Physics: Expanding Our Perimeter
- Natalia Toro Stanford University
- Philip Schuster Stanford University
January 30, 2014

PIRSA:14010113
Constructing Quantum Space Time

Bianca Dittrich Perimeter Institute for Theoretical Physics

January 30, 2014

PIRSA:14010112
What’s Happening in Cosmology?
- Kendrick Smith Perimeter Institute for Theoretical Physics
- Latham Boyle University of Edinburgh
January 30, 2014

PIRSA:14010111
Challenges 1

January 30, 2014

PIRSA:14010115
Experimental Metaphysics

Robert Spekkens Perimeter Institute for Theoretical Physics

January 30, 2014

PIRSA:14010110
What A Quantumful World

Hector Bombin PsiQuantum Corp.

January 30, 2014

PIRSA:14010109
Emergence and Entanglement: A New World of Condensed Matter Physics

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

January 30, 2014

PIRSA:14010108

Title	Speaker(s)	Date	Talk Type	Info link
Emergence of p+ip topological superconducting ground state in infinite-U Hubbard model on honeycomb lattice	Zheng-Cheng Gu	2014-02-10	Conference	View details
Aharonov-Bohm effect in symmetry protected states	Luiz Santos	2014-02-10	Conference	View details
Topological phases in graphene	Zlatko Papic	2014-02-10	Conference	View details
Challenges 2		2014-01-30	Conference	View details
Quantum Fields and Strings	Robert Myers	2014-01-30	Conference	View details
Particle Physics: Expanding Our Perimeter	Natalia Toro, Philip Schuster	2014-01-30	Conference	View details
Constructing Quantum Space Time	Bianca Dittrich	2014-01-30	Conference	View details
What’s Happening in Cosmology?	Kendrick Smith, Latham Boyle	2014-01-30	Conference	View details
Challenges 1		2014-01-30	Conference	View details
Experimental Metaphysics	Robert Spekkens	2014-01-30	Conference	View details
What A Quantumful World	Hector Bombin	2014-01-30	Conference	View details
Emergence and Entanglement: A New World of Condensed Matter Physics	Xiao-Gang Wen	2014-01-30	Conference	View details

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Format results

Emergence of p+ip topological superconducting ground state in infinite-U Hubbard model on honeycomb lattice

Aharonov-Bohm effect in symmetry protected states

Topological phases in graphene

Challenges 2

Quantum Fields and Strings

Particle Physics: Expanding Our Perimeter

Constructing Quantum Space Time

What’s Happening in Cosmology?

Challenges 1

Experimental Metaphysics

What A Quantumful World

Emergence and Entanglement: A New World of Condensed Matter Physics

Emergence of p+ip topological superconducting ground state in infinite-U Hubbard model on honeycomb lattice

Aharonov-Bohm effect in symmetry protected states

Topological phases in graphene

Challenges 2

Quantum Fields and Strings

Particle Physics: Expanding Our Perimeter

Constructing Quantum Space Time

What’s Happening in Cosmology?

Challenges 1

Experimental Metaphysics

What A Quantumful World

Emergence and Entanglement: A New World of Condensed Matter Physics