Zobrazeno 1 - 10
of 213
pro vyhledávání: '"De Jonghe, F."'
Publikováno v:
Class.Quant.Grav. 14 (1997) 35-46
The presence of Killing-Yano tensors implies the existence of non-standard supersymmetries in point particle theories on curved backgrounds. In a string theoretical context these are symmetries of the modes describing the particle-like behavior of th
Externí odkaz:
http://arxiv.org/abs/hep-th/9607203
A recently proposed variation on the usual procedure to perform the topological B-twist in rigid $N=2$ models is applied to the case of the $\sigma $ model on a K\"ahler manifold. This leads to an alternative description of Witten's topological $\sig
Externí odkaz:
http://arxiv.org/abs/hep-th/9510176
Publikováno v:
Nucl.Phys. B455 (1995) 440-460
One Lagrangian BRST quantization principle is that of imposing correct Schwinger-Dyson equations through the BRST Ward identities. In this paper we show how to derive the analogous $Sp(2)$-symmetric quantization condition in flat coordinates from an
Externí odkaz:
http://arxiv.org/abs/hep-th/9508034
Publikováno v:
Phys.Lett. B359 (1995) 114-117
The non-relativistic dynamics of a spin-1/2 particle in a monopole field possesses a rich supersymmetry structure. One supersymmetry, uncovered by d'Hoker and Vinet, is of the standard type: it squares to the Hamiltonian. In this paper we show the pr
Externí odkaz:
http://arxiv.org/abs/hep-th/9507046
Publikováno v:
Phys.Lett. B358 (1995) 246-252
We propose a new BRST operator for the B-twist of $N=2$ Landau-Ginzburg (LG) models. It solves the problem of the fractional ghost numbers of Vafa's old BRST operator and shows how the model is obtained by gauge fixing a zero action. An essential rol
Externí odkaz:
http://arxiv.org/abs/hep-th/9505174
Publikováno v:
Nucl.Phys. B454 (1995) 701-715
In the presence of consistent regulators, the standard procedure of BRST gauge fixing (or moving from one gauge to another) can require non-trivial modifications. These modifications occur at the quantum level, and gauges exist which are only well-de
Externí odkaz:
http://arxiv.org/abs/hep-th/9505040
Autor:
De Jonghe, F., Vandoren, S.
Publikováno v:
Phys.Lett. B324 (1994) 328-334
We discuss in detail the construction of topological field theories using the Batalin--Vilkovisky (BV) quantisation scheme. By carefully examining the dependence of the antibracket on an external metric, we show that differentiating with respect to t
Externí odkaz:
http://arxiv.org/abs/hep-th/9310166
Autor:
Damgaard, P. H., De Jonghe, F.
Publikováno v:
Phys.Lett. B305 (1993) 59-66
Starting from the requirement that a Lagrangian field theory be invariant under both Schwinger-Dyson BRST and Schwinger-Dyson anti-BRST symmetry, we derive the BRST--anti-BRST analogue of the Batalin-Vilkovisky formalism. This is done through standar
Externí odkaz:
http://arxiv.org/abs/hep-th/9302050
Publikováno v:
Phys.Lett. B306 (1993) 295-300
Anomalies can be anticipated at the classical level without changing the classical cohomology, by introducing extra degrees of freedom. In the process, the anomaly does not quite disappear. We show that, in fact, it is shifted to new symmetries that
Externí odkaz:
http://arxiv.org/abs/hep-th/9301122
Autor:
De Jonghe, F., Siebelink, R., Troost, W., Vandoren, S., van Nieuwenhuizen, P., Van Proeyen, A.
Publikováno v:
Phys.Lett. B289 (1992) 354-360
The Jacobian for infinitesimal BRST transformations of path integrals for pure Yang-Mills theory, viewed as a matrix $\unity +\Delta J$ in the space of Yang-Mills fields and (anti)ghosts, contains off-diagonal terms. Naively, the trace of $\Delta J$
Externí odkaz:
http://arxiv.org/abs/hep-th/9206097