期刊
PHYSICAL REVIEW D
卷 102, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.102.045016
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资金
- DFG (Deutsche Forschungsgemeinschaft)
- U.S. NSF [NSF-PHY-1915093]
- STFC [ST/P000290/1] Funding Source: UKRI
We investigate possible renormalization-group fixed points at nonzero coupling in phi(3) theories in six spacetime dimensions, using beta functions calculated to the four-loop level. We analyze three theories of this type, with (a) a one-component scalar, (b) a scalar transforming as the fundamental representation of a global SU(N) symmetry group, and (c) a scalar transforming as a bi-adjoint representation of a global SU(N) circle times SU(N) symmetry. We do not find robust evidence for such fixed points in theories (a) or (b). Theory (c) has the special feature that the one-loop term in the beta function is zero; implications of this are discussed.
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