Two-color gauge theory with novel infrared behavior

T. Appelquist; R. C. Brower; M. I. Buchoff; M. Cheng; G. T. Fleming; J. Kiskis; M. F. Lin; E. T. Neil; J. C. Osborn; C. Rebbi; D. Schaich; C. Schroeder; S. Syritsyn; G. Voronov; P. Vranas; O. Witzel

doi:10.1103/PhysRevLett.112.111601

Two-color gauge theory with novel infrared behavior

T. Appelquist, R. C. Brower, M. I. Buchoff, M. Cheng, G. T. Fleming, J. Kiskis, M. F. Lin, E. T. Neil, J. C. Osborn, C. Rebbi, D. Schaich, C. Schroeder, S. Syritsyn, G. Voronov, P. Vranas, O. Witzel

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract / Description of output

Using lattice simulations, we study the infrared behavior of a particularly interesting SU(2) gauge theory, with six massless Dirac fermions in the fundamental representation. We compute the running gauge coupling derived nonperturbatively from the Schrödinger functional of the theory, finding no evidence for an infrared fixed point up through gauge couplings ḡ2 of order 20. This implies that the theory either is governed in the infrared by a fixed point of considerable strength, unseen so far in nonsupersymmetric gauge theories, or breaks its global chiral symmetries producing a large number of composite Nambu-Goldstone bosons relative to the number of underlying degrees of freedom. Thus either of these phases exhibits novel behavior.

Original language	English
Article number	111601
Journal	Physical Review Letters
Volume	112
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevLett.112.111601
Publication status	Published - 18 Mar 2014

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Appelquist, T., Brower, R. C., Buchoff, M. I., Cheng, M., Fleming, G. T., Kiskis, J., Lin, M. F., Neil, E. T., Osborn, J. C., Rebbi, C., Schaich, D., Schroeder, C., Syritsyn, S., Voronov, G., Vranas, P., & Witzel, O. (2014). Two-color gauge theory with novel infrared behavior. Physical Review Letters, 112(11), Article 111601. https://doi.org/10.1103/PhysRevLett.112.111601

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title = "Two-color gauge theory with novel infrared behavior",

abstract = "Using lattice simulations, we study the infrared behavior of a particularly interesting SU(2) gauge theory, with six massless Dirac fermions in the fundamental representation. We compute the running gauge coupling derived nonperturbatively from the Schr{\"o}dinger functional of the theory, finding no evidence for an infrared fixed point up through gauge couplings ḡ2 of order 20. This implies that the theory either is governed in the infrared by a fixed point of considerable strength, unseen so far in nonsupersymmetric gauge theories, or breaks its global chiral symmetries producing a large number of composite Nambu-Goldstone bosons relative to the number of underlying degrees of freedom. Thus either of these phases exhibits novel behavior.",

author = "T. Appelquist and Brower, {R. C.} and Buchoff, {M. I.} and M. Cheng and Fleming, {G. T.} and J. Kiskis and Lin, {M. F.} and Neil, {E. T.} and Osborn, {J. C.} and C. Rebbi and D. Schaich and C. Schroeder and S. Syritsyn and G. Voronov and P. Vranas and O. Witzel",

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doi = "10.1103/PhysRevLett.112.111601",

language = "English",

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AU - Appelquist, T.

AU - Brower, R. C.

AU - Buchoff, M. I.

AU - Cheng, M.

AU - Fleming, G. T.

AU - Kiskis, J.

AU - Lin, M. F.

AU - Neil, E. T.

AU - Osborn, J. C.

AU - Rebbi, C.

AU - Schaich, D.

AU - Schroeder, C.

AU - Syritsyn, S.

AU - Voronov, G.

AU - Vranas, P.

AU - Witzel, O.

PY - 2014/3/18

Y1 - 2014/3/18

N2 - Using lattice simulations, we study the infrared behavior of a particularly interesting SU(2) gauge theory, with six massless Dirac fermions in the fundamental representation. We compute the running gauge coupling derived nonperturbatively from the Schrödinger functional of the theory, finding no evidence for an infrared fixed point up through gauge couplings ḡ2 of order 20. This implies that the theory either is governed in the infrared by a fixed point of considerable strength, unseen so far in nonsupersymmetric gauge theories, or breaks its global chiral symmetries producing a large number of composite Nambu-Goldstone bosons relative to the number of underlying degrees of freedom. Thus either of these phases exhibits novel behavior.

AB - Using lattice simulations, we study the infrared behavior of a particularly interesting SU(2) gauge theory, with six massless Dirac fermions in the fundamental representation. We compute the running gauge coupling derived nonperturbatively from the Schrödinger functional of the theory, finding no evidence for an infrared fixed point up through gauge couplings ḡ2 of order 20. This implies that the theory either is governed in the infrared by a fixed point of considerable strength, unseen so far in nonsupersymmetric gauge theories, or breaks its global chiral symmetries producing a large number of composite Nambu-Goldstone bosons relative to the number of underlying degrees of freedom. Thus either of these phases exhibits novel behavior.

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SN - 0031-9007

VL - 112

JO - Physical Review Letters

JF - Physical Review Letters

IS - 11

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Two-color gauge theory with novel infrared behavior

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