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pro vyhledávání: '"McGreevy, John"'
Chirality is a property of a gapped phase of matter in two spatial dimensions that can be manifested through non-zero thermal or electrical Hall conductance. In this paper, we prove two no-go theorems that forbid such chirality for a quantum state in
Externí odkaz:
http://arxiv.org/abs/2408.10306
In a physical system with conformal symmetry, observables depend on cross-ratios, measures of distance invariant under global conformal transformations (conformal geometry for short). We identify a quantum information-theoretic mechanism by which the
Externí odkaz:
http://arxiv.org/abs/2404.03725
Autor:
McGreevy, John, Grover, Tarun
Apparent violations of Naturalness may be explained by positing the existence of an omniscient but disinterested and possibly fallible Observer who regularly performs von Neumann measurements on us (and everything else). We comment briefly on the imp
Externí odkaz:
http://arxiv.org/abs/2404.00919
Chiral edges of 2+1D systems can have very robust emergent conformal symmetry. When the edge is purely chiral, the Hilbert space of low-energy edge excitations can form a representation of a single Virasoro algebra. We propose a method to systematica
Externí odkaz:
http://arxiv.org/abs/2403.18410
The dimer tiling problem asks in how many ways can the edges of a graph be covered by dimers so that each site is covered once. In the special case of a planar graph, this problem has a solution in terms of a free fermionic field theory. We rediscove
Externí odkaz:
http://arxiv.org/abs/2312.13390
Autor:
Lin, Ting-Chun, McGreevy, John
We derive an entropy formula satisfied by the ground states of 1+1D conformal field theories. The formula implies that the ground state is the critical point of an entropy function. We conjecture that this formula may serve as an information-theoreti
Externí odkaz:
http://arxiv.org/abs/2303.05444
Remote detectability is often taken as a physical assumption in the study of topologically ordered systems, and it is a central axiom of mathematical frameworks of topological quantum field theories. We show under the entanglement bootstrap approach
Externí odkaz:
http://arxiv.org/abs/2301.07119
Autor:
McGreevy, John
Recent advances in our understanding of symmetry in quantum many-body systems offer the possibility of a generalized Landau paradigm that encompasses all equilibrium phases of matter. This is a brief and elementary review of some of these development
Externí odkaz:
http://arxiv.org/abs/2204.03045