Realizing string breaking dynamics in a <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:msub> <mml:mi mathvariant="double-struck">Z</mml:mi> <mml:mn>2</mml:mn> </mml:msub> </mml:math> lattice gauge theory on quantum ha

We investigate static and dynamical aspects of string breaking in a <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"> <a:msub> <a:mi mathvariant="double-struck">Z</a:mi> <a:mn>2</a:mn> </a:msub> </a:math> lattice gauge theory coupled to Kogut-Susskind staggered fermions. Using tensor network simulations, we demonstrate that the static potential as well as the site-resolved configuration of the matter sites and gauge links allows us to identify the regimes in which string breaking occurs. Furthermore, we develop a variational quantum eigensolver that allows for reliably preparing the ground state of the theory in both the absence and presence of static charges and to capture the static aspects of the phenomenon. Carrying out state preparation on real quantum hardware for up to 19 qubits, we demonstrate its suitability for current quantum devices. In addition, we study the real-time dynamics of a flux tube between two static charges using both tensor networks and quantum hardware. Using a trotterization for the time-evolution operator, we are able to show that the breaking process starts with the creation of charges inside the string. These eventually redistribute toward the static charges and screen them, which leads to the breaking of the flux tube.

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Institutions

Publication Details

Journal
Physical review. D/Physical review. D.
Published
2025-11-12
DOI
https://doi.org/10.1103/r6sr-dv13
Citations
2
Primary Topic
Quantum many-body systems
Type
article
Field-Weighted Citation Impact
2.49
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article

Realizing string breaking dynamics in a <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:msub> <mml:mi mathvariant="double-struck">Z</mml:mi> <mml:mn>2</mml:mn> </mml:msub> </mml:math> lattice gauge theory on quantum ha

Georgios Polykratis, Stefan Kühn, Andreas Athenodorou, Kostas Blekos et al.
2 citations
Physical review. D/Physical review. D.
Quantum many-body systems
2.49
article

Realizing string breaking dynamics in a <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:msub> <mml:mi mathvariant="double-struck">Z</mml:mi> <mml:mn>2</mml:mn> </mml:msub> </mml:math> lattice gauge theory on quantum ha

Georgios Polykratis, Stefan Kühn, Andreas Athenodorou, Kostas Blekos, Constantia Alexandrou
article en
2 citations

Abstract

We investigate static and dynamical aspects of string breaking in a <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"> <a:msub> <a:mi mathvariant="double-struck">Z</a:mi> <a:mn>2</a:mn> </a:msub> </a:math> lattice gauge theory coupled to Kogut-Susskind staggered fermions. Using tensor network simulations, we demonstrate that the static potential as well as the site-resolved configuration of the matter sites and gauge links allows us to identify the regimes in which string breaking occurs. Furthermore, we develop a variational quantum eigensolver that allows for reliably preparing the ground state of the theory in both the absence and presence of static charges and to capture the static aspects of the phenomenon. Carrying out state preparation on real quantum hardware for up to 19 qubits, we demonstrate its suitability for current quantum devices. In addition, we study the real-time dynamics of a flux tube between two static charges using both tensor networks and quantum hardware. Using a trotterization for the time-evolution operator, we are able to show that the breaking process starts with the creation of charges inside the string. These eventually redistribute toward the static charges and screen them, which leads to the breaking of the flux tube.

Physical review. D/Physical review. D.Vol. 112(11)
Cyprus Institute (CY), Deutsches Elektronen-Synchrotron DESY (DE), University of Cyprus (CY)
Openalex Percentile: Top 9%
Quantum many-body systems
2.49
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