40.2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR2.3k papers
- Panjab UniversityIN2.1k papers
- Korea UniversityKR1.9k papers
- Sungkyunkwan UniversityKR1.9k papers
- Charles UniversityCZ1.9k papers
- Princeton UniversityUS1.9k papers
- Institute of High Energy PhysicsCN1.8k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR1.8k papers
- National Central UniversityTW1.8k papers
- Kyungpook National UniversityKR1.8k papers
- University of Maryland, College ParkUS1.8k papers
- University of California, RiversideUS1.8k papers
32 papers · 1 filter
A Time-Dependent Classical Solution of C=1 String Field Theory and Non-Perturbative Effects
Avinash Dhar, Gautam Mandal, Spenta R. Wadia
We describe a real-time classical solution of string field theory written in terms of the phase space density, , of the equivalent fermion theory. The solution corr…
Looking for the gluonic EMC effect in associated + production
R. V. Gavai, R. M. Godbole, K. Sridhar
We study the associated production of in fixed-target experiments with nuclear targets as well as at the relativistic heavy-ion collider (RHIC). We find that this proces…
Debajyoti Choudhury
Rohini M. Godbole, Probir Roy
Gluon fusion into a very heavy neutrino pair by Higgs exchange is shown to lead to substantial production cross sections at supercolliders even without any extra generation of…
Matrix Models and Black Holes
Sumit R. Das
We show that an integral transform of the fluctuations of the collective field of the matrix model satisfy the same linearized equation as that of the massless "tachyon" in t…
Tevatron Mass Limits for Heavy Quarks Decaying via Flavor Changing Neutral Current
Biswarup Mukhopadhyaya, D. P. Roy
The dimuon and dielectron data from the Tevatron collider are used to probe for heavy quarks, which decay dominantly via flavour changing neutral current. Depending on wh…
Marginal Deformations of WZNW and Coset Models from O(d,d) Transformation
S. F. Hassan, Ashoke Sen
We show that O(2,2) transformation of SU(2) WZNW model gives rise to marginal deformation of this model by the operator where , are U(1)…
Stringy Quantum Effects in 2-Dimensional Black-Hole
Avinash Dhar, Gautam Mandal, Spenta R. Wadia
We discuss the classical 2-dim. black-hole in the framework of the non-perturbative formulation (in terms of non-relativistic fermions) of c=1 string field theory. We identify an o…
Tau Signals of R-parity breaking at LEP 200
Rohini M. Godbole, Probir Roy, Xerxes Tata
The detectability at LEP 200 of explicit -parity breaking by tau-number violating operators is considered. The assumption of -violation is motivated by the relative…
Renormalization of Couplings in Embedded Random Surfaces
Sumit R. Das, S. Kalyana Rama
We study the dressing of operators and flows of corresponding couplings in models of {\it embedded} random surfaces. We show that these dressings can be obtained by applying the me…
Quantization of Dyon Charge and Electric-Magnetic Duality in String Theory
Ashoke Sen
We analyze the allowed spectrum of electric and magnetic charges carried by dyons in (toroidally compactified) heterotic string theory in four dimensions at arbitrary values of the…
Naked Singularities as Possible Candidates for Gamma-ray Bursters
Sandip K. Chakrabarti, Pankaj S. Joshi
Naked singularities appear naturally in dynamically evolving solutions of Einstein equations involving gravitational collapse of radiation, dust and perfect fluids, provided the ra…
Binary Black Holes in Stationary Orbits
Sandip K. Chakrabarti
We show that under certain astrophysical conditions a binary system consisting of two compact objects can be stabilized against indefinite shrinking of orbits due to the emission o…
Prospect of Heavy Right-Handed Neutrino Search at SSC/LHC Energies
Amitava Dattta, Manoranjan Guchait, D. P. Roy
Right-handed neutrinos with large Majorana mass occur naturally in the left-right symmetric model. We explore the prospect of such heavy Right-handed Neutrino search Via deca…
A Lower Bound on in the O(4) Model on Anisotropic Lattices
R. V. Gavai, U. M. Heller, F. Karsch +2
Results of an investigation of the spin model at finite temperature using anisotropic lattices are presented. In both the large approximation and numerical simulations u…
Non-relativistic Fermions, Coadjoint Orbits of \winf\ and String Field Theory at
Avinash Dhar, Gautam Mandal, Spenta R. Wadia
We apply the method of coadjoint orbits of \winf-algebra to the problem of non-relativistic fermions in one dimension. This leads to a geometric formulation of the quantum theory i…
Electric Magnetic Duality in String Theory
Ashoke Sen
The electric-magnetic duality transformation in four dimensional heterotic string theory discussed by Shapere, Trivedi and Wilczek is shown to be an exact symmetry of the equations…
Target Space Interpretation of New Moduli in 2D String Theory
Swapna Mahapatra, Sudipta Mukherji, Anirvan M. Sengupta
We analyze the new states that have recently been discovered in 2D string theory by E. Witten and B. Zwiebach. Since the Liouville direction is uncompactified, we show that the def…
Kleinian Singularities and the Ground Ring of C=1 String Theory
Debashis Ghoshal, Dileep P. Jatkar, Sunil Mukhi
We investigate the nature of the ground ring of c=1 string theory at the special A-D-E points in the c=1 moduli space associated to discrete subgroups of SU(2). The chiral ground r…
Discrete Symmetry, Neutrino Magnetic Moment and the 17 Kev Neutrino
Debajyoti Choudhury
The problem of generating large transition magnetic moments for nearly massless neutrinos in a truly three--generation case is discussed. A model to achieve the same by exploiting…
Macroscopic Charged Heterotic String
Ashoke Sen
Classical solutions of equations of motion in low energy effective field theory, describing fundamental charged heterotic string, are found. These solutions automatically carry an…
Four Dimensional 2-Brane Solution in Chiral Gauged Wess-Zumino-Witten Model
Swapna Mahapatra
An exact conformal field theory describing a four dimensional 2-brane solution is found by considering a chiral gauged Wess-Zumino -Witten theory corresponding to $SL(2, R)\times R…
Can the Quark-Gluon Plasma in the Early Universe be supercooled?
B. Banerjee, R. V. Gavai
The quark-hadron phase transition in the early universe can produce inhomogeneities in the distribution of nucleons, which in turn affect the primordial nucleosynthesis. In all the…
Classical Fermi Fluid and Geometric Action for
Avinash Dhar, Gautam Mandal, Spenta R. Wadia
We formulate the matrix model as a quantum fluid and discuss its classical limit in detail, emphasizing the corrections. We view the fermi fluid profiles as elements…
Rotating Charged Black Hole Solution in Heterotic String Theory
Ashoke Sen
We construct a solution of the classical equations of motion arising in the low energy effective field theory for heterotic string theory. This solution describes a black hole in f…