Non-BPS States and Branes in String Theory

Abstract

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 theories, 2) construction of stable non-BPS D-branes on various orbifolds and orientifolds of type II string theories, 3) description of BPS and non-BPS D-branes as tachyonic soliton solutions on brane-antibrane pair of higher dimension, and 4) study of the spectrum of non-BPS states and branes on a system of coincident D-brane - orientifold plane system. Some other related results are also discussed briefly.

LaTeX file, epsf, 53 pages, 17 figures, APCTP winter school lectures

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Cited by in corpus (84)

• Field Theory of Tachyon Matter
• Cosmic F- and D-strings
• On tadpoles and vacuum redefinitions in String Theory
• Dirac-Born-Infeld Action on the Tachyon Kink and Vortex
• Black hole and brane production in TeV gravity: A review
• Cosmic Strings and Superstrings
• Coupling of Rolling Tachyon to Closed Strings
• Cosmological Creation of D-branes and anti-D-branes
• Time and Tachyon
• Branes, Anti-Branes and Brauer Algebras in Gauge-Gravity duality
• Decay of Unstable D-branes with Electric Field
• S-Brane Thermodynamics
• Remarks on Tachyon Driven Cosmology
• Holographic Cosmology 3.0
• Prospects of Inflation
• Open and Closed Strings from Unstable D-branes
• Modular Bootstrap for Boundary N=2 Liouville Theory
• Things Fall Apart: Topology Change from Winding Tachyons
• Boundary States for the Rolling D-branes in NS5 Background
• Open Heterotic Strings
• On Brane-Antibrane Forces
• Two-dimensional superstrings and the supersymmetric matrix model
• More on WZ action of non-BPS branes
• Intersecting brane world models from D8-branes on (T^2 x T^4/Z_3)/Omega R_1 type IIA orientifolds
• Inflation from Tachyon Condensation, Large N Effects
• Topological Superconductors on Superstring Worldsheets
• On effective actions of BPS branes and their higher derivative corrections
• On the relation between p-adic and ordinary strings
• Strings, Branes and Extra Dimensions
• Reheating after S-Brane Ekpyrosis
• Exact Solutions in Open Bosonic String Field Theory and Marginal Deformation in CFT
• Kinks of open superstring field theory
• D-brane Dynamics in the c=1 Matrix Model
• Non-Singular Solutions for S-branes
• On Superstring Disk Amplitudes in a Rolling Tachyon Background
• Spacetime decay of cones at strong coupling
• The Tachyon does Matter
• Non-BPS Dp-Brane in the Background of NS5-Branes on Transverse R^3xS^1
• The Cap in the Hat: Unoriented 2D Strings and Matrix(-Vector) Models
• Metastable String Vacua
• D-branes on a Deformation of SU(2)
• Factorization Conjecture and the Open/Closed String Correspondence
• Note About Tachyon Kink In Nontrivial Background
• Non-commutative principal chiral models
• Bound-states of D-branes in L-R asymmetric superstring vacua
• Backreaction and the rolling tachyon -- an effective action point of view
• The Schrödinger Wave Functional and S-branes
• Quantum Kerr tunneling vacua on a $(D\bar{D}{)}_4$-brane: An emergent Kerr black hole in five dimensions
• Boundary RG Flows for Fermions and the Mod 2 Anomaly
• Noncommutative Tachyon Kinks as D$(p-1)$-branes from Unstable D$p$-brane
• Comments on the Fate of unstable orbifolds
• D-brane Anti-brane Annihilation in an Expanding Universe
• O(N) and USp(N) QCD from String Theory
• Connecting flux vacua through scalar field excursions
• One-loop Evolution of a Rolling Tachyon
• Global and Local D-vortices
• Proposal for the Open String Tachyon Effective Action in the Linear Dilaton Background
• Tachyon Condensation and Non-BPS D-branes in a Ramond-Ramond Plane Wave Background
• Phase Transitions in Separated $D_{p-1}$ and anti-$D_{p-1}$ Branes at Finite Temperature
• Fundamental strings and NS5-branes from unstable D-branes in supergravity
• Twisting E8 Five-Branes
• Note About Unstable M3-brane Action
• On modified tachyon DBI action
• GSO(-) Vertex Operators and Open Superstring Field Theory in Hybrid Variables
• On effective actions of non-BPS branes and their higher derivative corrections
• Note on Light-like Tachyon Condensation
• A proposal for M2-brane-anti-M2-brane action
• Commutative Geometry for Non-commutative D-branes by Tachyon Condensation
• Mirage resolution of cosmological singularities
• Smoothing out Negative Tension Brane
• Proper acceleration, geometric tachyon and dynamics of a fundamental string near D$p$ branes
• Exactly stable non-BPS spinors in heterotic string theory on tori
• Holographic Penta and Hepta Quark State in Confining Gauge Theories
• Open-Closed String Correspondence in Open String Field Theory
• Issues on tadpoles and vacuum redefinitions in String Theory
• Variational ansatz for gaussian + Yang-Mills two matrix model compared with Monte-Carlo simulations in 't Hooft limit
• Tachyon condensation in unbalanced D-anti D system
• Superstring Field Teory Action including Massless Fermions
• How to Stop (Worrying and Love) the Bubble: Boundary Changing Solutions
• Relating Schwarzschild Black Holes to Branes-Antibranes
• Witten's Cubic Open String Field Theory on multiple $Dp$-branes
• A Gravity Dual of Localized Tachyon Condensation in Intersecting Branes
• Confinement and Pseudoscalar Glueball Spectrum in the $2+1$D QCD-Like Theory from the Non-Susy D$2$ Brane
• Fundamental String (Membrane) Orbiting D5(M5)-branes