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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of MilanIT3.7k papers
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20 papers · 2 filters
Tachyons, Scalar Fields and Cosmology
V. Gorini, A. Yu. Kamenshchik, U. Moschella +1
We study the role that tachyon fields may play in cosmology as compared to the well-established use of minimally coupled scalar fields. We first elaborate on a kind of corresponden…
Planar Gravitational Corrections For Supersymmetric Gauge Theories
R. Dijkgraaf, M. T. Grisaru, H. Ooguri +2
In this paper we discuss the contribution of planar diagrams to gravitational F-terms for N=1 supersymmetric gauge theories admitting a large N description. We show how the planar…
Some properties of the integrable noncommutative sine-Gordon system
Marcus T. Grisaru, Liuba Mazzanti, Silvia Penati +1
In this paper we continue the program, initiated in Ref. hep-th/0112246, to investigate an integrable noncommutative version of the sine-Gordon model. We discuss the origin of the…
Supersymmetric Godel-type Universe in four Dimensions
Marco M. Caldarelli, Dietmar Klemm
We generalize the classification of all supersymmetric solutions of pure N=2, D=4 gauged supergravity to the case when external sources are included. It is shown that the source mu…
The anomalous dimension of the gluon-ghost mass operator in Yang-Mills theory
D. Dudal, H. Verschelde, V. E. R. Lemes +5
The local composite gluon-ghost operator is analysed in the framework of the algebraic renormalization in SU(N) Yang-Mills theories in the…
Kinky D-branes and straight strings of open string tachyon effective theory
Luca Martucci, Pedro J. Silva
In this letter we construct the kink D1-brane super D-helix solution and its T-dual the D2-brane supertube using the effective action of non-BPS tachyonic D-branes . In the limit o…
Two-loop Renormalization for Nonanticommutative N=1/2 Supersymmetric WZ Model
Marcus T. Grisaru, Silvia Penati, Alberto Romagnoni
We study systematically, through two loops, the divergence structure of the supersymmetric WZ model defined on the N=1/2 nonanticommutative superspace. By introducing a spurion fie…
Renormalizability of N=1/2 Wess-Zumino model in superspace
Alberto Romagnoni
In this letter we use the spurion field approach adopted in hep-th/0307099 in order to show that by adding F and F^2 terms to the original lagrangian, the N=1/2 Wess-Zumino model i…
Slavnov-Taylor1.0: A Mathematica package for computation in BRST formalism
Marco Picariello, Emilio Torrente-Lujan
Slavnov-Taylor 1.0 is a Mathematica package which allows us to perform automatic symbolic computation in BRST formalism. This article serves as a self-contained guide to prospectiv…
All Supersymmetric Solutions of N=2, D=4 Gauged Supergravity
Marco M. Caldarelli, Dietmar Klemm
We classify all supersymmetric solutions of minimal gauged supergravity in four dimensions. There are two classes of solutions that are distinguished by the norm of the Killing vec…
Actions and Fermionic symmetries for D-branes in bosonic backgrounds
Donald Marolf, Luca Martucci, Pedro J. Silva
In this article we derive the full interacting effective actions for supersymmetric D-branes in arbitrary bosonic type II supergravity backgrounds. The actions are presented in ter…
Four-point correlators of BPS operators in N=4 SYM at order g^4
G. Arutyunov, S. Penati, A. Santambrogio +1
We study the large N degeneracy in the structure of the four-point amplitudes of 1/2-BPS operators of arbitrary weight k in perturbative N=4 SYM theory. At one loop (order g^2) thi…
Vacuum Condensates of Dimension Two in Pure Euclidean Yang-Mills
D. Dudal, A. R. Fazio, V. E. R. Lemes +4
Gluon and ghost condensates of dimension two and their relevance for Yang-Mills theories are briefly reviewed
Supertubes in reduced holonomy manifolds
Joaquim Gomis, Toni Mateos, Pedro J. Silva +1
We show that the supertube configurations exist in all supersymmetric type IIA backgrounds which are purely geometrical and which have, at least, one flat direction. In other words…
Supersymmetric Domain Walls and Strings in D=5 gauged Supergravity coupled to Vector Multiplets
Sergio L. Cacciatori, Dietmar Klemm, Wafic A. Sabra
We present new supersymmetric domain wall and string solutions of five-dimensional N = 2 gauged supergravity coupled to an arbitrary number of vector multiplets. Using the techniqu…
Fermions, T-duality and effective actions for D-branes in bosonic backgrounds
Donald Marolf, Luca Martucci, Pedro J. Silva
We find the effective action for any D-brane in a general bosonic background of supergravity. The results are explicit in component fields up to second order in the fermions and ar…
Supergravity duals of supersymmetric four dimensional gauge theories
F. Bigazzi, A. L. Cotrone, M. Petrini +1
This article contains an overview of some recent attempts at understanding supergravity and string duals of four dimensional gauge theories using the AdS/CFT correspondence. We dis…
On type II superstrings in bosonic backgrounds: the role of fermions and T-duality
Luca Martucci, Pedro J. Silva
We derive the actions for type II Green-Schwarz strings up to second order in the fermions, for general bosonic backgrounds. We base our work on the so-called normal coordinate exp…
Gluon-ghost condensate of mass dimension 2 in the Curci-Ferrari gauge
D. Dudal, H. Verschelde, V. E. R. Lemes +3
The effective potential for an on-shell BRST invariant gluon-ghost condensate of mass dimension 2 in the Curci-Ferrari gauge in SU(N) Yang-Mills is analysed by combining the local…
YM on the dielectric brane: a D0-brane tale
Luca Martucci, Pedro J. Silva
In this letter we present a derivation, from the D0-brane picture, of the background monopole field and in general of the full dynamics of the Yang-Mills theory on the dielectric D…