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Equivariance, BRST symmetry, and superspace (1994)

Niemi, Antti J. ; Tirkkonen, Olav

College Park, Md. : American Institute of Physics (AIP)

Journal of Mathematical Physics 35 (1994), S. 6418-6433

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ISSN: 1089-7658

Quelle: AIP Digital Archive

Thema: Mathematik , Physik

Notizen: The structure of equivariant cohomology in non-Abelian localization formulas and topological field theories is discussed. Equivariance is formulated in terms of a nilpotent Becchi–Rouet–Stora–Tyutin (BRST) symmetry, and another nilpotent operator which restricts the BRST cohomology onto the equivariant, or basic sector. A superfield formulation is presented and connections to reducible [Batalin–Fradkin–Vilkovisky (BFV)] quantization of topological Yang–Mills theory are discussed. © 1994 American Institute of Physics.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1063/1.530683

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Stable knot-like structures in classical field theory (1997)

Faddeev, L. ; Niemi, Antti J.

[s.l.] : Macmillan Magazines Ltd

Nature 387 (1997), S. 58-61

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik

Notizen: [Auszug] Today it is commonly accepted that fundamental interactions are described by string-like structures', with different elementary particles corresponding to the vibrational excitations of a ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/387058a0

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Supersymmetric structures in 4-D Yang–Mills theory (1998)

Kalkkinen, Jussi ; Niemi, Antti J.

Springer

The European physical journal 4 (1998), S. 723-739

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ISSN: 1434-6052

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract. Recently there has been much progress in understanding confinement in the N=2 supersymmetric Yang–Mills theory. Here we shall investigate how these results could be extended to explain color confinement in the ordinary Yang–Mills theory. In particular, we inquire whether confinement in the N=2 theory can be related to color confinement in the ordinary Yang–Mills theory in the framework of Parisi–Sourlas dimensional reduction. For this we study the partition function of the ordinary Yang–Mills theory in different regimes. Our analysis reveals that an intimate connection indeed exists between these two approaches.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/s100529800776

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