Anomalies without an action

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Anomalies without an action. / Chen, Wei-Ming; Huang, Yu-tin; McGady, David A.

In: arXiv.org: Physics, 27.02.2014.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Chen, W-M, Huang, Y & McGady, DA 2014, 'Anomalies without an action', arXiv.org: Physics.

APA

Chen, W-M., Huang, Y., & McGady, D. A. (Accepted/In press). Anomalies without an action. arXiv.org: Physics, [PUTP 2459].

Vancouver

Chen W-M, Huang Y, McGady DA. Anomalies without an action. arXiv.org: Physics. 2014 Feb 27. PUTP 2459.

Author

Chen, Wei-Ming ; Huang, Yu-tin ; McGady, David A. / Anomalies without an action. In: arXiv.org: Physics. 2014.

Bibtex

@article{829ac426b2374568b1ad26c2cc7ee581,
title = "Anomalies without an action",
abstract = "Modern on-shell methods allow us to construct both the classical and quantum S-matrix for a large class of theories, without utilizing knowledge of the interacting Lagrangian. It was recently shown that the same applies for chiral gauge theories, where the constraints from anomaly cancelation can be recast into the tension between unitarity and locality, without any reference to gauge symmetry. In this paper, we give a more detailed exploration, for chiral QED and QCD. We study the rational terms that are mandated by locality, and show that the factorization poles of such terms reveal a new particle in the spectrum, the Green-Schwarz two-from. We further extend the analysis to six-dimensional gravity coupled to chiral matter, including self-dual two-forms for which covariant actions generically do not exist. Despite this, the on-shell methods define the correct quantum S-matrix by demonstrating that locality of the one-loop amplitude requires combination of chiral matter that is consistent with that of anomaly cancelation.",
keywords = "hep-th, hep-ph",
author = "Wei-Ming Chen and Yu-tin Huang and McGady, {David A.}",
note = "42 pages",
year = "2014",
month = feb,
day = "27",
language = "English",
journal = "arXiv.org: Physics",
publisher = "Cornell University Library",

}

RIS

TY - JOUR

T1 - Anomalies without an action

AU - Chen, Wei-Ming

AU - Huang, Yu-tin

AU - McGady, David A.

N1 - 42 pages

PY - 2014/2/27

Y1 - 2014/2/27

N2 - Modern on-shell methods allow us to construct both the classical and quantum S-matrix for a large class of theories, without utilizing knowledge of the interacting Lagrangian. It was recently shown that the same applies for chiral gauge theories, where the constraints from anomaly cancelation can be recast into the tension between unitarity and locality, without any reference to gauge symmetry. In this paper, we give a more detailed exploration, for chiral QED and QCD. We study the rational terms that are mandated by locality, and show that the factorization poles of such terms reveal a new particle in the spectrum, the Green-Schwarz two-from. We further extend the analysis to six-dimensional gravity coupled to chiral matter, including self-dual two-forms for which covariant actions generically do not exist. Despite this, the on-shell methods define the correct quantum S-matrix by demonstrating that locality of the one-loop amplitude requires combination of chiral matter that is consistent with that of anomaly cancelation.

AB - Modern on-shell methods allow us to construct both the classical and quantum S-matrix for a large class of theories, without utilizing knowledge of the interacting Lagrangian. It was recently shown that the same applies for chiral gauge theories, where the constraints from anomaly cancelation can be recast into the tension between unitarity and locality, without any reference to gauge symmetry. In this paper, we give a more detailed exploration, for chiral QED and QCD. We study the rational terms that are mandated by locality, and show that the factorization poles of such terms reveal a new particle in the spectrum, the Green-Schwarz two-from. We further extend the analysis to six-dimensional gravity coupled to chiral matter, including self-dual two-forms for which covariant actions generically do not exist. Despite this, the on-shell methods define the correct quantum S-matrix by demonstrating that locality of the one-loop amplitude requires combination of chiral matter that is consistent with that of anomaly cancelation.

KW - hep-th

KW - hep-ph

M3 - Journal article

JO - arXiv.org: Physics

JF - arXiv.org: Physics

M1 - PUTP 2459

ER -

ID: 185900154