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International Journal of Modern Physics A, 2005 The scope of this review is to give a pedagogical introduction to some new calculations and methods developed by the author in the context of quantum groups and their applications. The review is self-contained and serves as a "first aid kit" before one ventures into the beautiful but bewildering landscape of Woronowicz's theory.
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Journal of High Energy Physics, 2009 The zero modes of closed strings on a torus --the torus coordinates plus dual coordinates conjugate to winding number-- parameterize a doubled torus. In closed string field theory, the string field depends on all zero-modes and so can be expanded to give an infinite set of fields on the doubled torus.
Hull, Chris, Zwiebach, Barton
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Untwisting Topological Field Theories [PDF]
, 1996 A method is presented by which a hidden N=2 superconformal symmetry can be exhibited in a string theory or indeed in a topological conformal field theory.
Figueroa-O'Farrill, J. M.
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Journal of High Energy Physics, 2019 Supersymmetric theories with the same bosonic content but different fermions, aka twins, were thought to exist only for supergravity. Here we show that pairs of super conformal field theories, for example exotic N $$ \mathcal{N} $$ = 3 and N $$ \mathcal ...
L. Borsten, M. J. Duff, A. Marrani
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Anomalies in quantum field theories
Vojnotehnički Glasnik, 2023 Introduction/purpose: Noether’s theorem connects symmetry of the Lagrangian to conserved quantities. Quantum effects cancel the conserved quantities. Methods: Triangle diagram, Path integral, Pauli-Villars regularisation. Results: Quantum effects that
Nicola Fabiano
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Reductions of exceptional field theories
Journal of High Energy Physics, 2020 Double Field Theory (DFT) and Exceptional Field Theory (EFT), collectively called ExFTs, have proven to be a remarkably powerful new framework for string and M-theory.
David S. Berman, Ray Otsuki
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Balanced Topological Field Theories [PDF]
, 1996 We describe a class of topological field theories called ``balanced topological field theories.'' These theories are associated to moduli problems with vanishing virtual dimension and calculate the Euler character of various moduli spaces.
Dijkgraaf, R., Moore, G.
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Biharmonic Conformal Field Theories [PDF]
, 1995 The main result of this paper is the construction of a conformally covariant operator in two dimensions acting on scalar fields and containing fourth order derivatives. In this way it is possible to derive a class of Lagrangians invariant under conformal
Ambjorn +22 more
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Renormalizing Open Quantum Field Theories
Universe, 2022 The functional renormalization group flow of a scalar field theory with quartic couplings and a sharp spatial momentum cutoff is presented in four-dimensional Minkowski space-time for the bare action by retaining the entanglement of the IR and the UV ...
Sandor Nagy, Janos Polonyi
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Generalized Toda Field Theories [PDF]
, 1995 In this paper we introduce a unified approach to Toda field theories which allows us to formulate the classes of $A_n$, $B_n$ and $C_n$ models as unique models involving an arbitrary continuous parameter $\nu$.
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