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CERN Document Server Encontrados 68 registros  1 - 10siguientefinal  ir al registro: La búsqueda tardó 0.57 segundos. 
1.
Cohomological partition functions for a class of bosonic theories / Niemi, Antti J ; Tirkkonen, O
We argue, that for a general class of nontrivial bosonic theories the path integral can be related to an equivariant generalization of conventional characteristic classes..
hep-th/9206033; HU-TFT-92-20.- Helsinki : Helsinki TU. Inst. Theor. Phys., 1992 - 11 p. - Published in : Phys. Lett. B 293 (1992) 339-343 External link: Fulltext - CERN library copies
2.
Index theorems and loop space geometry / Hietamaki, A. (Helsinki U.) ; Niemi, Antti J. (CERN)
We investigate the evaluation of the Dirac index using symplectic geometry in the loop space of the corresponding supersymmetric quantum mechanical model. In particular, we find that if we impose a simple first class constraint, we can evaluate the Callias index of an odd dimensional Dirac operator directly from the quantum mechanical model which yields the Atiyah-Singer index of an even dimensional Dirac operator in one more dimension. [...]
hep-th/9206010; CERN-TH-6471-92; HU-TFT-92-15; CERN-TH-6471-92; HU-TFT-92-15.- Geneva : CERN, 1992 - 11 p. - Published in : Phys. Lett. B 288 (1992) 331-341 Fulltext: PS.GZ; Preprint: PDF; - CERN library copies
3.
Geometric approach to supersymmetry / Morozov, A Yu ; Niemi, Antti J ; Palo, K
HU-TFT-91-60; ITEP-M-91-11.- Helsinki : Helsinki TU. Inst. Theor. Phys., 1992 - 12 p.
In : European Physics Conference on Advanced Quantum Field Theory and Critical Phenomena, Como, Italy, 17 - 21 Jun 1991, pp.2149-2157
4.
Supersymplectic geometry of supersymmetric quantum field theories / Morozov, A Yu ; Niemi, Antti J ; Palo, K
HU-TFT-91-55 ; ITEP-M-91-10.
- 1991. - 50 p.
CERN library copies
5.
Supersymmetry and loop space geometry / Morozov, A Yu (Moscow, ITEP) ; Niemi, Antti J (Helsinki U. ; CERN) ; Palo, K (Tartu, Inst. Phys.)
We present a conceptually new interpretation of Poincaré supersymmetric theories in terms of loop space symplectic geometry. We argue, that the fermionic part of a supersymmetric action can be viewed as a (pre) symplectic two form in the loop space of bosonic fields, and the bosonic part of the action can be constructed by contracting the pertinent loop space symplectic potential with a model independent vector field. [...]
HU-TFT-91-41; ITEP-M-91-7.- Helsinki : Helsinki TU. Inst. Theor. Phys., 1991 - 13 p. - Published in : Phys. Lett. B 271 (1991) 365-371 - CERN library copies
6.
Geometry of N = 1/2 supersymmetry and the Atiyah-Singer index theorem / Hietamäki, A ; Morozov, A Yu ; Niemi, Antti J ; Palo, K
CERN-TH-6089-91; HU-TFT-91-21.- Geneva : CERN, 1991 - 14 p. - Published in : Phys. Lett. B 262 (1991) 417-424 Fulltext: PDF; - CERN library copies
7.
Topological field theories and integrable models / Keski-Vakkuri, E ; Niemi, Antti J ; Semenoff, Gordon W ; Tirkkonen, O
HU-TFT-91-2.
- 1991. - 16 p.
CERN library copies
8.
Duistermaat-Heckman integration formula and path integrals / Niemi, Antti J
HU-TFT-90-33.- Helsinki : Helsinki TU. Inst. Theor. Phys., 1991 - 8 p.
In : 6th International Seminar on Quarks, Telavi, Georgia, USSR, 14 - 19 May 1990, pp.287-293
9.
Orbit geometry, group representations and topological quantum field theories / Niemi, Antti J ; Pasanen, P
HU-TFT-90-51.
- 1990. - 13 p.
CERN library copies
10.
Path integrals and geometry of trajectories / Blau, Matthias ; Keski-Vakkuri, E ; Niemi, Antti J
HU-TFT-90-30.
- 1990. - 10 p.
CERN library copies

CERN Document Server : Encontrados 68 registros   1 - 10siguientefinal  ir al registro:
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