SISSA Open Science

Browsing by Author "Physics"

Browsing by Author "Physics"

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  • 1/8 BPS States in Ads/CFT 
    Gava, Edi; Milanesi, Giuseppe; Narain, Kumar S.; O'Loughlin, Martin (2006-11-09)
    We study a class of exact supersymmetric solutions of type IIB Supergravity. They have an SO(4) x SU(2) x U(1) isometry and preserve generically 4 of the 32 supersymmetries of the theory. Asymptotically AdS_5 x S^5 solutions ...
  • 4D Effective Theory and Geometrical Approach 
    Salvio, Alberto (2006-10-04)
    We consider the 4D effective theory for the light Kaluza-Klein (KK) modes. The heavy KK mode contribution is generally needed to reproduce the correct physical predictions: an equivalence, between the effective theory and ...
  • About quantization of gravity 
    Furlan, Giuseppe; de Alfaro, Vittorio; Fubini, Sergio (SISSA Library, 1984)
  • The Absolute Neutrino Mass Scale, Neutrino Mass Spectrum, Majorana CP-Violation and Neutrinoless Double-Beta Decay 
    Pascoli, Silvia; Petcov, Serguey T.; Schwetz, Thomas (2006-09-25)
    Assuming 3-$\nu$ mixing, massive Majorana neutrinos and neutrinoless double-beta (\betabeta-) decay generated only by the (V-A) charged current weak interaction via the exchange of the three Majorana neutrinos, we briefly ...
  • The alpha-prime stretched horizon in Heterotic string 
    Exirifard, Ghasem (2006-05-11)
    The linear alpha-prime corrections and the field redefinition ambiguities are studied for half-BPS singular backgrounds representing a wrapped fundamental string. It is shown that there exist schemes in which the inclusion ...
  • Anomaly-corrected supersymmetry algebra and supersymmetric holographic renormalization 
    An, Ok Song (SISSA, 2017-03-16)
    We present a systematic approach to supersymmetric holographic renormalization for a generic 5D N = 2 gauged supergravity theory with matter multiplets, including its fermionic sector, with all gauge fields consistently ...
  • Aspects of Finite Temperature Quantum Field Theory in a Black Hole Background 
    Milanesi, Giuseppe; Mintchev, Mihail (2005)
    We quantize a scalar field at finite temperature T in the background of a classical black hole, adopting 't Hooft's "brick wall" model with generic mixed boundary conditions at the brick wall boundary. We first focus on ...
  • Backreacting Flavors in the Klebanov-Strassler Background 
    Benini, Francesco; Canoura, Felipe; Cremonesi, Stefano; Nunez, Carlos; Ramallo, Alfonso V. (2007-09-17)
    n this paper we present new analytic solutions of pure Type IIB supergravity plus D7-branes describing the addition of an arbitrary number of flavors to the Klebanov-Tseytlin and Klebanov-Strassler backgrounds. We provide ...
  • Beyond Amplitudes' Positivity and the Fate of Massive Gravity 
    Bellazzini, Brando; Riva, Francesco; Serra, Javi; Sgarlata, Francesco (2017)
    We constrain effective feld theories by going beyond the familiar positivity bounds that follow from unitarity, analyticity, and crossing symmetry of the scattering amplitudes. As interesting examples, we discuss the ...
  • BPS Partition Functions for Quiver Gauge Theories: Counting Fermionic Operators 
    Forcella, Davide (2007-05-31)
    We discuss a general procedure to obtain 1/2 BPS partition functions for generic N = 1 quiver gauge theories. These functions count the gauge invari- ant operators (bosonic and fermionic), charged under all the global ...
  • Brane world effective actions for D-branes with fluxes 
    Bertolini, Matteo; Billó, Marco; Lerda, Alberto; Morales, Jose F.; Russo, Rodolfo (2005)
    We develop systematic string techniques to study brane world effective actions for models with magnetized (or equivalently intersecting) D-branes. In particular, we derive the dependence on all NS-NS moduli of the kinetic ...
  • Bubbling AdS and Vacuum String Field Theory 
    Bonora, Loriano; Maccaferri, Carlo; Scherer Santos, Ricardo Jose; Tolla, Driba Demissie (2006-04-12)
    We show that a family of 1/2--BPS states of $\N=4$ SYM is in correspondence with a family of classical solutions of VSFT with a $B$--field playing the role of the inverse Planck constant. We show this correspondence by ...
  • Can we learn something more on oscillations from atmospheric neutrinos? 
    Schwetz, Thomas (2006-11-09)
    We show that for long-baseline experiments using a Mt water Cerenkov detector atmospheric neutrino data provide a powerful method to resolve parameter degeneracies. In particular, the combination of long-baseline and ...
  • Chan-Paton factors and Higgsing from Vacuum String Field Theory 
    Maccaferri, Carlo (2005)
    We give a description of open strings stretched between N parallel D-branes in VSFT. We show how higgsing is generated as the branes are displaced: the shift in the mass formula for on-shell states stretched between different ...
  • Charged Lepton Decays L_i to L_j + gamma, Leptogenesis CP-Violating Parameters and Majorana Phases 
    Petcov, Serguey T.; Shindou, Tetsuo (2006-06-13)
    We analyse the dependence of the rates of the LFV charged lepton decays mu to e + gamma, tau to e + gamma, tau to mu + gamma (l_i to l_j + gamma) and their ratios, predicted in the class of SUSY theories with see-saw ...
  • Classification of complete N=2 supersymmetric theories in 4 dimensions 
    Cecotti, Sergio; Vafa, Cumrun (SISSA, 2011-03-30)
    We define the notion of a complete N=2 supersymmetric theory in 4 dimensions as a UV complete theory for which all the BPS central charges can be arbitrarily varied as we vary its Coulomb branch parameters, masses, ...
  • Closed Bosonic String Field Theory at Quintic Order II: Marginal Deformations and Effective Potential 
    Moeller, Nicolas (2007-05-31)
    We verify that the dilaton together with one exactly marginal field, form a moduli space of marginal deformations of closed bosonic string field theory to polynomial order five. We use the results of this successful check ...
  • Closed Bosonic String Field Theory at Quintic Order: Five-Tachyon Contact Term and Dilaton Theorem 
    Moeller, Nicolas (2006-10-11)
    We solve the geometry of the closed string field theory five-point vertex. Our solution is calculated in terms of quadratic Strebel differentials which are found numerically all over the relevant subspace of the moduli ...
  • A comment on the measurement of neutrino masses in beta-decay experiments 
    Bilenky, Samoil M.; Mateev, Matey D.; Petcov, Serguey T. (2006-05-11)
    We discuss the physics potential of future tritium beta-decay experiments having a sensitivity to a neutrino mass ~\sqrt{|\Delta m^{2}_{23}|}~5x10^{-2} eV. The case of three-neutrino mixing is analised. A negative result ...
  • Comments on the non-conformal gauge theories dual to Ypq manifolds 
    Brini, Andrea; Forcella, Davide (2006-05-30)
    We study the infrared behavior of the entire class of Y(p,q) quiver gauge theories. The dimer technology is exploited to discuss the duality cascades and support the general belief about a runaway behavior for the whole ...

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