Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of Naples Federico IIIT4k papers
- Centre National de la Recherche ScientifiqueFR3.7k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di Roma IIT3.4k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR3.3k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di GenovaIT3.1k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR3.1k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di PisaIT3k papers
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiIT2.9k papers
- Rutherford Appleton LaboratoryGB2.8k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di BolognaIT2.8k papers
- Sapienza University of RomeIT2.7k papers
- The Ohio State UniversityUS2.7k papers
12 papers · 2 filters
D branes in string theory,I
Paolo Di Vecchia, Antonella Liccardo
In these lectures we present a detailed description of the origin and of the construction of the boundary state that is now widely used for studying the properties of D branes. (Le…
Bicovariant Calculus in Quantum Theory and a Generalization of the Gauss Law
G. Bimonte, G. Marmo, A. Stern
We construct a deformation of the quantum algebra Fun(T^*G) associated with Lie group G to the case where G is replaced by a quantum group G_q which has a bicovariant calculus. The…
Non-Locality and Ellipticity in a Gauge-Invariant Quantization
Giampiero Esposito, Cosimo Stornaiolo
The quantum theory of a free particle in two dimensions with non-local boundary conditions on a circle is known to lead to surface and bulk states. Such a scheme is here generalize…
Tracker fields from nonminimally coupled theory
R. de Ritis, A. A. Marino, C. Rubano +1
We extend the concept of quintessence to a flat nonminimally coupled scalar - tensor theories of gravity. By means of Noether's symmetries for the cosmological pointlike Lagrangian…
Quintessence duality
R. de Ritis, A. A. Marino, C. Rubano +1
We join quintessence cosmological scenarios with the duality simmetry existing in string dilaton cosmologies. Actually, we consider the tracker potential type and sho…
Noncommutative Geometry, Strings and Duality
Fedele Lizzi
In this talk, based on work done in collaboration with G. Landi and R.J Szabo, I will review how string theory can be considered as a noncommutative geometry based on an algebra of…
(F,Dp) bound states from the boundary state
P. Di Vecchia, M. Frau, A. Lerda +1
We use the boundary state formalism to provide the full conformal description of (F,Dp) bound states. These are BPS configurations that arise from a superposition of a fundamental…
New Kernels in Quantum Gravity
Giampiero Esposito
Recent work in the literature has proposed the use of non-local boundary conditions in Euclidean quantum gravity. The present paper studies first a more general form of such a sche…
Consistent Off-Shell Tree String Amplitudes
A. Liccardo, F. Pezzella, R. Marotta
We give a construction of off-shell tree bosonic string amplitudes, based on the operatorial formalism of the -string Vertex, with three external massless states both for open a…
Strings, Noncommutative Geometry and the Size of the Target Space
Fedele Lizzi
We describe how the presence of the antisymmetric tensor (torsion) on the world sheet action of string theory renders the size of the target space a gauge non invariant quantity. T…
Qualitative Properties of the Dirac Equation in a Central Potential
Giampiero Esposito, Pietro Santorelli
The Dirac equation for a massive spin-1/2 field in a central potential V in three dimensions is studied without fixing a priori the functional form of V. The second-order equations…
Prescriptions for Off-Shell Bosonic String Amplitudes
L. Cappiello, A. Liccardo, R. Pettorino +2
We give, in the framework of the bosonic string theory, simple prescriptions for computing, at tree and one-loop levels, off-shell string amplitudes for open and closed string mass…