Results 41 to 50 of about 2,664,445 (176)
Worldsheet description of a massive type IIA superstring in 10D
Journal of High Energy Physics, 2023 We construct, following [1, 2], a massive M2-brane (supermembrane) as the limit of a genus two M2-brane that becomes a twice punctured Riemann surface with particular boundary conditions on the fields defined on the punctures.
M. P. Garcia del Moral +2 more
doaj +1 more source
Temperature instabilities in N=4 strings [PDF]
, 1999 An effective supergravity description of all instabilities of N_4=4 superstrings is derived. The construction is based on the N_4=4 BPS mass formula at finite temperature and uses the properties of N_4=4 gauged supergravity. It provides the boundaries of
J. Derendinger
semanticscholar +1 more source
Negative Norms in Quantized Strings as Dark Energy Density of the Cosmos
, 2016 The present short paper is concerned with accurate explanation as well as quantification of the so called missing dark energy of the cosmos. It was always one of the main objectives of any successful general theory of high energy particle physics and ...
M. Naschie
semanticscholar +1 more source
Integrated massive vertex operator in pure spinor formalism
Journal of High Energy Physics, 2018 We construct the integrated vertex operator for the first massive states of open superstrings with (mass)2 = 1/α ′ in the pure spinor formalism of the superstring theory. This vertex operator is expressed in terms of the ten dimensional N = 1 $$ \mathcal{
Subhroneel Chakrabarti +2 more
doaj +1 more source
Loop amplitudes monodromy relations and color-kinematics duality
Journal of High Energy Physics, 2021 Color-kinematics duality is a remarkable conjectured property of gauge theory which, together with double copy, is at the heart of a wealth of new developments in scattering amplitudes.
Eduardo Casali +2 more
doaj +1 more source
Theta expansion of first massive vertex operator in pure spinor
Journal of High Energy Physics, 2018 We provide the covariant superspace equations that are sufficient to determine the complete θ expansion of the vertex operator of the open string massive states with (mass)2 = 1/α′ in pure spinor formalism of superstring theory.
Subhroneel Chakrabarti +2 more
doaj +1 more source
Eleven Dimensional Origin of String/String Duality: A One Loop Test [PDF]
, 1995 Membrane/fivebrane duality in D=11 implies Type IIA string/Type IIA fivebrane duality in D=10, which in turn implies Type IIA string/heterotic string duality in D=6.
Duff, M. J., Liu, James T., Minasian, R.
core +3 more sources
Inflation from superstring and M-theory compactification with higher order corrections [PDF]
, 2004 We study time-dependent solutions in M and superstring theories with higher-order corrections. We first present general field equations for theories of Lovelock type with stringy corrections in arbitrary dimensions.
K. Maeda, N. Ohta
semanticscholar +1 more source
Model-Building for Fractional Superstrings [PDF]
Nucl.Phys. B376 (1992) 297-349, 1991 Fractional superstrings are recently-proposed generalizations of the traditional superstrings and heterotic strings. They have critical spacetime dimensions which are less than ten, and in this paper we investigate model-building for the heterotic versions of these new theories.
arxiv +1 more source
A Note on the dS Swampland Conjecture, Non‐BPS Branes and K‐Theory
Fortschritte der Physik, Volume 67, Issue 11, November 2019., 2019 Abstract We point out that the de Sitter swampland conjecture would be falsified if classical fluxed Type IIA orientifold vacua with a single non‐BPS D7‐brane were indeed part of the string theory landscape. In other words, the dS swampland conjecture implies the cancellation of K‐theory charges on a compact space.
Ralph Blumenhagen +2 more
wiley +1 more source