48 citations · 482 across the 38 of their papers we have counts for
22 papers · 1 filter
New Torsional Deformations of Locally AdS Space
Laura Andrianopoli, Bianca Letizia Cerchiai, Ruggero Noris +3
We consider general torsion components in three-dimensional Einstein-Cartan gravity, providing a geometrical interpretation for matter, and find new solutions of the corresponding…
Twisting D(2,1; α) Superspace
L. Andrianopoli, B. L. Cerchiai, R. Matrecano +3
We develop a three-dimensional theory of rigid supersymmetry describing the dynamics of a set of hypermultiplets on a curved AdS…
AdS supergravity, holography and Ward identities
L. Andrianopoli, B. L. Cerchiai, R. Matrecano +5
We develop in detail the holographic framework for an pure AdS supergravity model in four dimensions, including all the contributions from the fermionic fields and…
Analytic SU(N) Skyrmions at finite Baryon density
Pedro D. Alvarez, Sergio L. Cacciatori, Fabrizio Canfora +1
We construct analytic (3+1)-dimensional Skyrmions living at finite Baryon density in the SU(N) Skyrme model that are not trivial embeddings of SU(2) into SU(N). We used Euler angle…
The Quantum Theory of Chern-Simons Supergravity
L. Andrianopoli, B. L. Cerchiai, P. A. Grassi +1
We consider -extended Chern-Simons supergravity (à la Achucarro-Tonswend) and we study its gauge symmetries. We promote those gauge symmetries to a BRST symmetry and we…
The role of PSL(2,7) in M-theory: M2-branes, Englert equation and the septuples
Bianca Letizia Cerchiai, Pietro Fré, Mario Trigiante
Reconsidering the M2-brane solutions of d=11 supergravity with a transverse Englert flux introduced by one of us in 2016, we present a new purely group theoretical algorithm to sol…
Unconventional Supersymmetry at the Boundary of AdS_4 Supergravity
L. Andrianopoli, B. L. Cerchiai, R. D'Auria +1
In this paper we perform, in the spirit of the holographic correspondence, a particular asymptotic limit of N=2, AdS_4 supergravity to N=2 supergravity on a locally AdS_3 boundary.…
On Multifield Born and Born-Infeld Theories and their non-Abelian Generalizations
B. L. Cerchiai, M. Trigiante
Starting from a recently proposed linear formulation in terms of auxiliary fields, we study -field generalizations of Born and Born-Infeld theories. In this description the Lagr…
Iwasawa nilpotency degree of non compact symmetric cosets in N-extended Supergravity
Sergio Luigi Cacciatori, Bianca Letizia Cerchiai, Sergio Ferrara +1
We analyze the polynomial part of the Iwasawa realization of the coset representative of non compact symmetric Riemannian spaces. We start by studying the role of Kostant's princip…
Adams-Iwasawa N=8 Black Holes
Sergio Luigi Cacciatori, Bianca Letizia Cerchiai, Alessio Marrani
We study some of the properties of the geometry of the exceptional Lie group E7(7), which describes the U-duality of the N=8, d=4 supergravity. In particular, based on a symplectic…
On the Scalar Manifold of Exceptional Supergravity
Sergio L. Cacciatori, Bianca L. Cerchiai, Alessio Marrani
We construct two parametrizations of the non compact exceptional Lie group G=E7(-25), based on a fibration which has the maximal compact subgroup K=(E6 x U(1))/Z_3 as a fiber. It i…
Magic Coset Decompositions
Sergio L. Cacciatori, Bianca Letizia Cerchiai, Alessio Marrani
By exploiting a "mixed" non-symmetric Freudenthal-Rozenfeld-Tits magic square, two types of coset decompositions are analyzed for the non-compact special Kähler symmetric rank-3 co…
Charge Orbits of Extremal Black Holes in Five Dimensional Supergravity
Bianca L. Cerchiai, Sergio Ferrara, Alessio Marrani +1
We derive the U-duality charge orbits, as well as the related moduli spaces, of "large" and "small" extremal black holes in non-maximal ungauged Maxwell-Einstein supergravities wit…
Iwasawa N=8 Attractors
Sergio L. Cacciatori, Bianca L. Cerchiai, Alessio Marrani
Starting from the symplectic construction of the Lie algebra e_7(7) due to Adams, we consider an Iwasawa parametrization of the coset E_7(7)/SU(8), which is the scalar manifold of…
Duality, Entropy and ADM Mass in Supergravity
Bianca L. Cerchiai, Sergio Ferrara, Alessio Marrani +1
We consider the Bekenstein-Hawking entropy-area formula in four dimensional extended ungauged supergravity and its electric-magnetic duality property. Symmetries of both "large" an…
Euler angles for G2
Sergio L. Cacciatori, Bianca L. Cerchiai, Alberto Della Vedova +2
We provide a simple parametrization for the group G2, which is analogous to the Euler parametrization for SU(2). We show how to obtain the general element of the group in a form em…
The Seiberg-Witten Map for a Time-dependent Background
Bianca Letizia Cerchiai
In this paper the Seiberg-Witten map for a time-dependent background related to a null-brane orbifold is studied. The commutation relations of the coordinates are linear, i.e. it i…
The Seiberg-Witten Map for Noncommutative Gauge Theories
B. L. Cerchiai, A. F. Pasqua, B. Zumino
The Seiberg-Witten map for noncommutative Yang-Mills theories is studied and methods for its explicit construction are discussed which are valid for any gauge group. In particular…
Nonabelian Gauge Theories on Noncommutative Spaces
D. Brace, B. L. Cerchiai, B. Zumino
In this paper, we describe a method for obtaining the nonabelian Seiberg-Witten map for any gauge group and to any order in theta. The equations defining the Seiberg-Witten map are…
A Cohomological Approach to the Non-Abelian Seiberg-Witten Map
D. Brace, B. L. Cerchiai, A. F. Pasqua +2
We present a cohomological method for obtaining the non-Abelian Seiberg-Witten map for any gauge group and to any order in theta. By introducing a ghost field, we are able to expre…
Some remarks on unilateral matrix equations
B. L. Cerchiai, B. Zumino
We briefly review the results of our paper hep-th/0009013: we study certain perturbative solutions of left-unilateral matrix equations. These are algebraic equations where the coef…
Properties of perturbative solutions of unilateral matrix equations
Bianca L. Cerchiai, Bruno Zumino
A left-unilateral matrix equation is an algebraic equation of the form where the coefficients and the unknown are square matrices o…