author={P. Vecchia and M. Frau and I. Pesando and S. Sciuto and A. Lerda and R. Russo},
  journal={Nuclear Physics},
We show that the boundary state description of a Dp-brane is strictly related to the corresponding classical solution of the low-energy string effective action. By projecting the boundary state on the massless states of the closed string we obtain the tension, the R-R charge and the large-distance behavior of the classical solution. We discuss both the case of a single D-brane and that of bound states of two D-branes. We also show that in the R-R sector the boundary state, written in a picture… Expand
(F,Dp) bound states from the boundary state
Abstract We use the boundary state formalism to provide the full conformal description of (F,D p ) bound states. These are BPS configurations that arise from a superposition of a fundamental stringExpand
D-branes in Gepner models
Abstract We discuss D-branes from a conformal field theory point of view. In this approach, branes are described by boundary states providing sources for closed string modes, independently ofExpand
Is a classical description of stable non-BPS D-branes possible?☆
Abstract We study the classical geometry produced by a stack of stable (i.e., tachyon-free) non-BPS D-branes present in K3 compactifications of type II string theory. This classical representation isExpand
Gauge Theories from D Branes
In these lectures we start with a pedagogical introduction of the properties of open and closed superstrings and then, using the open/closed string duality, we construct the boundary state thatExpand
We investigate the general solution with the symmetry ISO(1, p) × SO(9-p) of Type II supergravity (the three-parameter solution) from the viewpoint of the superstring theory. We find that one of theExpand
Stable non-BPS D-branes in type I string theory
Abstract We use the boundary state formalism to study, from the closed string point of view, superpositions of branes and anti-branes which are relevant in some non-perturbative string dualities.Expand
The geometry of fractional branes
Abstract By looking at fractional Dp-branes of type IIA on T4/Z2 as wrapped branes and by using boundary state techniques we construct the effective low-energy action for the fields generated byExpand
Closed string radiation from moving D-branes
We compute the amplitude for the radiation of massless NS-NS closed string states from the interaction of two moving D-branes. We consider particle-like D-branes with reference to four-dimensionalExpand
D-branes in type 0 string theory
Abstract Using boundary states we derive the presence of (chiral) fermions on the intersection of type 0 D-branes. The corresponding anomalous couplings on the branes are then computed. Furthermore,Expand
Non-commutative open string and D-brane
Abstract In this paper we consider the quantization of open strings ending on D-branes with a background B field. We find that space-time coordinates of the open string end-points becomeExpand


Boundary states of D-branes and dy-strings
Abstract Polchinski's recent construction of Dirichlet branes of R-R charges, together with Witten's mechanism for forming bound states of both NS-NS charges and R-R charges, provides a rigorousExpand
D-brane boundary state dynamics
Abstract We construct the open string boundary states corresponding to various time-dependent deformations of the D -brane and explore several ways in which they may be used to study stringy solitonExpand
Decay of Excited D-branes
Abstract We calculate the leading order interactions of massless D-brane excitations. Their 4-point functions are found to be identical to those found in type I theory. The amplitude for two masslessExpand
More D -brane bound states
The low-energy background field solutions corresponding to D-brane bound states which possess a difference in dimension of two are presented. These solutions are constructed using the T-duality mapExpand
The size of p-branes
Abstract We obtain form factors for scattering of gravitons and anti-symmetric tensor particles off Dirichlet p -branes in Type II superstring theory. As expected, the form factor of the −1-braneExpand
Boundary states for moving D-branes
Abstract We determine the boundary state for both the NS-NS and R-R sectors of superstring theory. We show how they are modified under a boost. The boosted boundary state is then used for computingExpand
Light-cone supersymmetry and D-branes
Abstract D-brane boundary states for type II superstrings are constructed by enforcing the conditions that preserve half of the space-time supersymmetry. A light-cone coordinate frame is used whereExpand
Superstring Scattering from D-Branes
Abstract We write the vertex operators of massless NS–NS and RR states of Type II superstring theory in the presence of orientifold p-planes. They include the usual vertex operators of Type II theoryExpand
Gravitational lensing by p-branes
The scattering of R-R gauge bosons off of Dirichlet p-branes is computed to leading order in the string coupling. The results are qualitatively similar to those found in the scattering of masslessExpand
Scattering of closed strings from many D-branes☆
We develop an operator formalism to compute scattering amplitudes of arbitrary bosonic string states in the background of many D-branes. Specifically, we construct a suitable boundary state which weExpand