Adjoint SU(2) with four fermion interactions

Jarno Rantaharju, Vincent Drach, Claudio Pica, Francesco Sannino

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Abstract

Four fermion interactions appear in many models of Beyond Standard Model physics. In Technicolour and composite Higgs models Standard Model fermion masses can be generated by four fermion terms. They are also expected to modify the dynamics of the new strongly interacting sector. In particular in technicolour models it has been suggested that they can be used to break infrared conformality and produce a walking theory with a large mass anomalous dimension. We study the SU(2) gauge theory with 2 adjoint fermions and a chirally symmetric four fermion term. We demonstrate chiral symmetry breaking at large four fermion coupling and study the phase diagram of the model.

Original languageEnglish
Article number231
JournalProceedings of Science
VolumePart F128557
Number of pages7
ISSN1824-8039
Publication statusPublished - 2016
Event34th Annual International Symposium on Lattice Field Theory - University of Southampton, Southampton, United Kingdom
Duration: 24. Jul 201630. Jul 2016

Conference

Conference34th Annual International Symposium on Lattice Field Theory
LocationUniversity of Southampton
CountryUnited Kingdom
CitySouthampton
Period24/07/201630/07/2016

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fermions
interactions
walking
gauge theory
broken symmetry
sectors
phase diagrams
physics
composite materials

Cite this

Rantaharju, Jarno ; Drach, Vincent ; Pica, Claudio ; Sannino, Francesco. / Adjoint SU(2) with four fermion interactions. In: Proceedings of Science. 2016 ; Vol. Part F128557.
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abstract = "Four fermion interactions appear in many models of Beyond Standard Model physics. In Technicolour and composite Higgs models Standard Model fermion masses can be generated by four fermion terms. They are also expected to modify the dynamics of the new strongly interacting sector. In particular in technicolour models it has been suggested that they can be used to break infrared conformality and produce a walking theory with a large mass anomalous dimension. We study the SU(2) gauge theory with 2 adjoint fermions and a chirally symmetric four fermion term. We demonstrate chiral symmetry breaking at large four fermion coupling and study the phase diagram of the model.",
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Rantaharju, J, Drach, V, Pica, C & Sannino, F 2016, 'Adjoint SU(2) with four fermion interactions', Proceedings of Science, vol. Part F128557, 231.

Adjoint SU(2) with four fermion interactions. / Rantaharju, Jarno; Drach, Vincent; Pica, Claudio; Sannino, Francesco.

In: Proceedings of Science, Vol. Part F128557, 231, 2016.

Research output: Contribution to journalConference articleResearchpeer-review

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T1 - Adjoint SU(2) with four fermion interactions

AU - Rantaharju, Jarno

AU - Drach, Vincent

AU - Pica, Claudio

AU - Sannino, Francesco

PY - 2016

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N2 - Four fermion interactions appear in many models of Beyond Standard Model physics. In Technicolour and composite Higgs models Standard Model fermion masses can be generated by four fermion terms. They are also expected to modify the dynamics of the new strongly interacting sector. In particular in technicolour models it has been suggested that they can be used to break infrared conformality and produce a walking theory with a large mass anomalous dimension. We study the SU(2) gauge theory with 2 adjoint fermions and a chirally symmetric four fermion term. We demonstrate chiral symmetry breaking at large four fermion coupling and study the phase diagram of the model.

AB - Four fermion interactions appear in many models of Beyond Standard Model physics. In Technicolour and composite Higgs models Standard Model fermion masses can be generated by four fermion terms. They are also expected to modify the dynamics of the new strongly interacting sector. In particular in technicolour models it has been suggested that they can be used to break infrared conformality and produce a walking theory with a large mass anomalous dimension. We study the SU(2) gauge theory with 2 adjoint fermions and a chirally symmetric four fermion term. We demonstrate chiral symmetry breaking at large four fermion coupling and study the phase diagram of the model.

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JO - P o S - Proceedings of Science

JF - P o S - Proceedings of Science

SN - 1824-8039

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