Results 41 to 50 of about 2,279,282 (231)
Dynamics of perturbations in Double Field Theory & non-relativistic string theory [PDF]
, 2015 A bstractDouble Field Theory provides a geometric framework capable of describing string theory backgrounds that cannot be understood purely in terms of Riemannian geometry — not only globally (‘non-geometry’), but even locally (‘non-Riemannian’).
Sung Moon Ko +3 more
semanticscholar +1 more source
Asymptotic scalar field cosmology in string theory
Journal of High Energy Physics, 2022 Asymptotic (late-time) cosmology depends on the asymptotic (infinite-distance) limits of scalar field space in string theory. Such limits feature an exponentially decaying potential V ~ exp(−cϕ) with corresponding Hubble scale H ~ ϕ ̇ 2 + 2 V $$ \sqrt ...
Tom Rudelius
doaj +1 more source
String-theoretic breakdown of effective field theory near black hole horizons [PDF]
, 2015 We investigate the validity of the equivalence principle near horizons in string theory, analyzing the breakdown of effective field theory caused by longitudinal string spreading effects.
Matthew Dodelson, E. Silverstein
semanticscholar +1 more source
Space-Time Noncommutative Field Theories And Unitarity [PDF]
, 2000 We study the perturbative unitarity of noncommutative scalar field theories. Field theories with space-time noncommutativity do not have a unitary S-matrix. Field theories with only space noncommutativity are perturbatively unitary.
Abouelsaood +35 more
core +3 more sources
The Ramond sector of heterotic string field theory [PDF]
, 2013 We attempt to construct the full equations of motion for the Neveu-Schwarz and the Ramond sectors of the heterotic string field theory. Although they are non-polynomial also in the Ramond string field $\Psi$, we can construct them order by order in $\Psi$
H. Kunitomo
semanticscholar +1 more source
Background independence of closed superstring field theory
Journal of High Energy Physics, 2018 Given a family of world-sheet superconformal field theories related by marginal deformation, we can formulate superstring field theory based on any of these world-sheet theories.
Ashoke Sen
doaj +1 more source
A Background Independent Formulation of Noncritical String Theory [PDF]
Phys.Lett. B352 (1995) 75-82, 1995 Using the string field theory recently proposed by the authors and collaborators, we give a background independent formulation of rational noncritical string theories with $c\leq 1$. With a little modification of the string field Hamiltonians previously constructed, we obtain string field theories which include various rational noncritical string ...
arxiv +1 more source
SYM Description of PP-wave String Interactions: Singlet Sector and Arbitrary Impurities [PDF]
, 2003 We study string interactions among string states with arbitrary impurities in the Type IIB plane wave background using string field theory. We reproduce all string amplitudes from gauge theory by computing matrix elements of the dilatation operator in a ...
Beisert +48 more
core +2 more sources
Tachyon Dynamics in Open String Theory [PDF]
Int.J.Mod.Phys.A20:5513-5656,2005, 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 used for this study include techniques of two dimensional conformal field theory, open string field theory, boundary string field theory, non-commutative ...
arxiv +1 more source
Closed string deformations in open string field theory. Part II. Superstring
Journal of High Energy Physics, 2021 This is the second paper of a series of three. We construct effective open-closed superstring couplings by classically integrating out massive fields from open superstring field theories coupled to an elementary gauge invariant tadpole proportional to an
Carlo Maccaferri, Jakub Vošmera
doaj +1 more source