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Multiversality and unnecessary criticallity in one dimension

Abstract:
We present microscopic models of spin ladders which exhibit continuous critical surfaces whose properties and existence, unusually, cannot be inferred from those of the flanking phases. These models exhibit either “multiversality”—the presence of different universality classes over finite regions of a critical surface separating two distinct phases—or its close cousin, “unnecessary criticality”—the presence of a stable critical surface within a single, possibly trivial, phase. We elucidate these properties using Abelian bosonization and density-matrix renormalization-group simulations, and attempt to distill the key ingredients required to generalize these considerations.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/PhysRevLett.130.256401

Authors


More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Role:
Author
More by this author
Institution:
University of Oxford
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Theoretical Physics
Oxford college:
Hertford College
Role:
Author
ORCID:
0000-0002-5055-5528


Publisher:
American Physical Society
Journal:
Physical Review Letters More from this journal
Volume:
130
Issue:
25
Article number:
256401
Publication date:
2022-06-22
Acceptance date:
2023-05-18
DOI:


Language:
English
Keywords:
Pubs id:
1278671
Local pid:
pubs:1278671
Deposit date:
2023-06-22

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