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First-Principles Simulations of 1+1D Quantum Field Theories at θ=π and Spin Chains

Sulejmanpasic, Tin; Göschl, Daniel; Gattringer, Christof

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Authors

Daniel Göschl

Christof Gattringer



Abstract

We present a lattice study of a 2-flavor U(1) gauge-Higgs model quantum field theory with a topological term at θ = π. Such studies are prohibitively costly in the standard lattice formulation due to the sign problem. Using a novel discretization of the model, along with an exact lattice dualization, we overcome the sign problem and reliably simulate such systems. Our work provides the first ab initio demonstration that the model is in the spin-chain universality class, and demonstrates the power of the new approach to U(1) gauge theories.

Citation

Sulejmanpasic, T., Göschl, D., & Gattringer, C. (2020). First-Principles Simulations of 1+1D Quantum Field Theories at θ=π and Spin Chains. Physical Review Letters, 125(20), Article 201602. https://doi.org/10.1103/physrevlett.125.201602

Journal Article Type Article
Acceptance Date Oct 13, 2020
Online Publication Date Nov 12, 2020
Publication Date 2020-11
Deposit Date Nov 26, 2020
Publicly Available Date Mar 29, 2024
Journal Physical Review Letters
Print ISSN 0031-9007
Electronic ISSN 1079-7114
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 125
Issue 20
Article Number 201602
DOI https://doi.org/10.1103/physrevlett.125.201602

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Copyright Statement
Reprinted with permission from the American Physical Society: Sulejmanpasic, Tin, Göschl, Daniel & Gattringer, Christof (2020). First-Principles Simulations of 1+1D Quantum Field Theories at θ=π and Spin Chains. Physical Review Letters 125(20): 201602 © 2020 by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.





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