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Publications Influence

F-theory and orientifolds

- A. Sen
- Physics
- 22 May 1996

By analyzing F-theory on K3 near the orbifold limit of K3 we establish the equivalence between F-theory on K3 and an orientifold of type IIB on T2, which in turn is related by a T-duality… Expand

565 63- PDF

Universality of the tachyon potential

- A. Sen
- Physics
- 16 November 1999

Using string field theory, we argue that the tachyon potential on a D-brane in bosonic string theory in arbitrary background has a universal form, independent of the boundary conformal field theory… Expand

414 43- PDF

Tachyon Dynamics in Open String Theory

- A. Sen
- Physics
- 11 October 2004

In this review we describe our current understanding of the properties of open string tachyons on an unstable D-brane or brane–antibrane system in string theory. The various string theoretic methods… Expand

445 34- PDF

Black hole entropy function and the attractor mechanism in higher derivative gravity

- A. Sen
- Physics
- 21 June 2005

We study extremal black hole solutions in D dimensions with near horizon geometry AdS2 ? SD?2 in higher derivative gravity coupled to other scalar, vector and anti-symmetric tensor fields. We define… Expand

300 32- PDF

Classical solutions in string field theory around the tachyon vacuum

- L. Rastelli, A. Sen, B. Zwiebach
- Physics
- 19 February 2001

In a previous paper [hep-th/0012251] we proposed a simple class of actions for string field theory around the tachyon vacuum. In this paper we search for classical solutions describing D-branes of… Expand

178 32- PDF

Non-BPS States and Branes in String Theory

- A. Sen
- Physics
- 29 April 1999

We review the recent developments in our understanding of non-BPS states and branes in string theory. The topics include 1) construction of unstable non-BPS D-branes in type IIA and type IIB string… Expand

515 30

Orientifold limit of F -theory vacua

- A. Sen
- Physics
- 24 February 1997

We show how an F theory compactified on a Calabi-Yau (n+1)-fold in an appropriate weak coupling limit reduces formally to an orientifold of type IIB theory compactified on an auxiliary complex… Expand

175 29- PDF

Tachyon Matter

- A. Sen
- Physics
- 28 March 2002

It is shown that classical decay of unstable D-branes in bosonic and superstring theories produces pressureless gas with non-zero energy density. The energy density is stored in the open string… Expand

739 28- PDF

Stable non-BPS bound states of BPS D-branes

- A. Sen
- Physics
- 5 May 1998

S-duality symmetry of type IIB string theory predicts the existence of a stable non-BPS state on an orbifold five plane of the type IIB theory if the orbifold group is generated by the simultaneous… Expand

332 27- PDF

D0-branes on $T^n$ and matrix theory

- A. Sen
- Physics
- 30 September 1997

The Hamiltonian describing Matrix theory on T^n is identified with the Hamiltonian describing the dynamics of D0-branes on T^n in an appropriate weak coupling limit for all n up to 5. New subtleties… Expand

267 25- PDF

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