Scheme dependence of two-loop hard thermal loop perturbation theory resummed thermodynamics
Abstract
The resummed thermodynamics of $$\mathscr{N}$$ = 4 supersymmetric Yang-Mills theory in four space-time dimensions has been calculated previously to two loop order within hard thermal loop perturbation theory (HTLpt) using the canonical dimensional regularization (DRG) scheme. Herein, we revisit this calculation using the regularization by dimensional reduction (RDR) scheme. Since the RDR scheme manifestly preserves supersymmetry it is the preferred scheme; however, it is important to assess if and by how much the resummed perturbative results depend on the regularization scheme used. Comparing predictions for the scaled entropy obtained using the DRG and RDR schemes we find that for λ ≲ 6 they are numerically very similar. We then compare the results obtained in both schemes with the strict perturbative result, which is accurate up to order λ2, and a generalized Padé approximant constructed from the known large-Nc weak- and strong-coupling expansions. Comparing the strict perturbative expansion of the two-loop HTLpt result with the perturbative expansion to order λ2, we find that both the DRG and RDR HTLpt calculations result in the same scheme-independent predictions for the coefficients at order λ, λ3/2, and λ2 log λ; however, at order λ2 there is a residual regularization scheme dependence.
- Authors:
- Publication Date:
- Research Org.:
- Kent State Univ., Kent, OH (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC); Guangdong Major Project of Basic and Applied Basic Research; Natural Science Foundation of China
- OSTI Identifier:
- 1862488
- Alternate Identifier(s):
- OSTI ID: 1980056
- Grant/Contract Number:
- SC0013470; 2020B0301030008
- Resource Type:
- Published Article
- Journal Name:
- Physical Review D
- Additional Journal Information:
- Journal Name: Physical Review D Journal Volume: 105 Journal Issue: 7; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; quark-gluon plasma; thermodynamics
Citation Formats
Du, Qianqian, Strickland, Michael, and Tantary, Ubaid. Scheme dependence of two-loop hard thermal loop perturbation theory resummed SYM 4 , 4 thermodynamics. United States: N. p., 2022.
Web. doi:10.1103/PhysRevD.105.074004.
Du, Qianqian, Strickland, Michael, & Tantary, Ubaid. Scheme dependence of two-loop hard thermal loop perturbation theory resummed SYM 4 , 4 thermodynamics. United States. https://doi.org/10.1103/PhysRevD.105.074004
Du, Qianqian, Strickland, Michael, and Tantary, Ubaid. Mon .
"Scheme dependence of two-loop hard thermal loop perturbation theory resummed SYM 4 , 4 thermodynamics". United States. https://doi.org/10.1103/PhysRevD.105.074004.
@article{osti_1862488,
title = {Scheme dependence of two-loop hard thermal loop perturbation theory resummed SYM 4 , 4 thermodynamics},
author = {Du, Qianqian and Strickland, Michael and Tantary, Ubaid},
abstractNote = {The resummed thermodynamics of $\mathscr{N}$ = 4 supersymmetric Yang-Mills theory in four space-time dimensions has been calculated previously to two loop order within hard thermal loop perturbation theory (HTLpt) using the canonical dimensional regularization (DRG) scheme. Herein, we revisit this calculation using the regularization by dimensional reduction (RDR) scheme. Since the RDR scheme manifestly preserves supersymmetry it is the preferred scheme; however, it is important to assess if and by how much the resummed perturbative results depend on the regularization scheme used. Comparing predictions for the scaled entropy obtained using the DRG and RDR schemes we find that for λ ≲ 6 they are numerically very similar. We then compare the results obtained in both schemes with the strict perturbative result, which is accurate up to order λ2, and a generalized Padé approximant constructed from the known large-Nc weak- and strong-coupling expansions. Comparing the strict perturbative expansion of the two-loop HTLpt result with the perturbative expansion to order λ2, we find that both the DRG and RDR HTLpt calculations result in the same scheme-independent predictions for the coefficients at order λ, λ3/2, and λ2 log λ; however, at order λ2 there is a residual regularization scheme dependence.},
doi = {10.1103/PhysRevD.105.074004},
journal = {Physical Review D},
number = 7,
volume = 105,
place = {United States},
year = {Mon Apr 11 00:00:00 EDT 2022},
month = {Mon Apr 11 00:00:00 EDT 2022}
}
https://doi.org/10.1103/PhysRevD.105.074004
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