Removal of the trace mode in lattice super Yang-Mills theory
Abstract
Twisted and orbifold formulations of lattice N = 4 super Yang-Mills theory which possess an exact supersymmetry require a U(N)=SU(N) Ⓧ U(1) gauge group. In the naive continuum limit, the U(1) modes trivially decouple and play no role in the theory. However, at nonzero lattice spacing they couple to the SU(N) modes and can drive instabilities in the lattice theory. For example, it is well known that the lattice U(1) theory undergoes a phase transition at strong coupling to a chirally broken phase. An improved action that suppresses the fluctuations in the U(1) sector was proposed in Catterall and Schaich [J. High Energy Phys. 07 (2015) 057]. Here, we explore a more aggressive approach to the problem by adding a term to the action which can entirely suppress the U(1) mode. The penalty is that the new term breaks the Q-exact lattice supersymmetry. However, we argue that the term is 1/N2 suppressed and the existence of a supersymmetric fixed point in the planar limit ensures that any supersymmetry-violating terms induced in the action possess couplings that also vanish in this limit. We present numerical results on supersymmetric Ward identities consistent with this conclusion.
- Authors:
- Publication Date:
- Research Org.:
- Syracuse Univ., NY (United States); Rensselaer Polytechnic Inst., Troy, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1483343
- Alternate Identifier(s):
- OSTI ID: 1611301
- Grant/Contract Number:
- SC0009998; SC0013496
- Resource Type:
- Published Article
- Journal Name:
- Physical Review. D.
- Additional Journal Information:
- Journal Name: Physical Review. D. Journal Volume: 98 Journal Issue: 9; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Astronomy & Astrophysics; Physics; Supersymmetric models
Citation Formats
Catterall, Simon, Jha, Raghav G., and Giedt, Joel. Removal of the trace mode in lattice N = 4 super Yang-Mills theory. United States: N. p., 2018.
Web. doi:10.1103/PhysRevD.98.095017.
Catterall, Simon, Jha, Raghav G., & Giedt, Joel. Removal of the trace mode in lattice N = 4 super Yang-Mills theory. United States. https://doi.org/10.1103/PhysRevD.98.095017
Catterall, Simon, Jha, Raghav G., and Giedt, Joel. Mon .
"Removal of the trace mode in lattice N = 4 super Yang-Mills theory". United States. https://doi.org/10.1103/PhysRevD.98.095017.
@article{osti_1483343,
title = {Removal of the trace mode in lattice N = 4 super Yang-Mills theory},
author = {Catterall, Simon and Jha, Raghav G. and Giedt, Joel},
abstractNote = {Twisted and orbifold formulations of lattice N = 4 super Yang-Mills theory which possess an exact supersymmetry require a U(N)=SU(N) Ⓧ U(1) gauge group. In the naive continuum limit, the U(1) modes trivially decouple and play no role in the theory. However, at nonzero lattice spacing they couple to the SU(N) modes and can drive instabilities in the lattice theory. For example, it is well known that the lattice U(1) theory undergoes a phase transition at strong coupling to a chirally broken phase. An improved action that suppresses the fluctuations in the U(1) sector was proposed in Catterall and Schaich [J. High Energy Phys. 07 (2015) 057]. Here, we explore a more aggressive approach to the problem by adding a term to the action which can entirely suppress the U(1) mode. The penalty is that the new term breaks the Q-exact lattice supersymmetry. However, we argue that the term is 1/N2 suppressed and the existence of a supersymmetric fixed point in the planar limit ensures that any supersymmetry-violating terms induced in the action possess couplings that also vanish in this limit. We present numerical results on supersymmetric Ward identities consistent with this conclusion.},
doi = {10.1103/PhysRevD.98.095017},
journal = {Physical Review. D.},
number = 9,
volume = 98,
place = {United States},
year = {Mon Nov 26 00:00:00 EST 2018},
month = {Mon Nov 26 00:00:00 EST 2018}
}
https://doi.org/10.1103/PhysRevD.98.095017
Web of Science
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