Results 31 to 40 of about 5,303 (156)
Topological amplitude computations using the pure spinor formalism
Journal of High Energy Physics, 2019 After constructing a simplified four-dimensional version of the b ghost, topological multiloop amplitudes in type II superstring theory compactified on a six-dimensional orbifold are computed using the non-minimal pure spinor formalism. These pure spinor
Nathan Berkovits, Luis Alberto Ypanaqué
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Random Walks in Rindler Spacetime and String Theory at the Tip of the Cigar [PDF]
, 2014 In this paper, we discuss Rindler space string thermodynamics from a thermal scalar point of view as an explicit example of the results obtained in JHEP 1402 (2014) 127.
Mertens, T. G. +2 more
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Integrating three-loop modular graph functions and transcendentality of string amplitudes
Journal of High Energy Physics, 2022 Modular graph functions (MGFs) are SL(2, ℤ)-invariant functions on the Poincaré upper half-plane associated with Feynman graphs of a conformal scalar field on a torus.
Eric D’Hoker, Nicholas Geiser
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Dual String Pairs With N=1 And N=2 Supersymmetry In Four Dimensions [PDF]
, 1995 Based on a simple adiabatic argument and by considering the heterotic string counterpart of certain symmetries of Type II superstrings such as $(-1)^{F_L}$ and orientation reversal, we construct orbifold candidates for dual pairs of heterotic and Type II
Affleck +37 more
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Two-loop superstrings VI Nonrenormalization theorems and the 4-point function ☆ [PDF]
, 2005 The N-point amplitudes for the type II and heterotic superstrings at two-loop order and for N ⩽ 4 massless NS bosons are evaluated explicitly from first principles, using the method of projection onto superperiod matrices introduced and developed in the ...
E. D’Hoker, D. Phong
semanticscholar +1 more source
Amplitudes involving massive states using pure spinor formalism
Journal of High Energy Physics, 2018 Same amplitudes evaluated independently using RNS and pure spinor formalism are expected to agree. While for massless states, this fact has been firmly established, for massive states such an explicit check has been lacking so far.
Subhroneel Chakrabarti +2 more
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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
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Supermoduli and PCOs at genus two
Journal of High Energy Physics, 2023 We illustrate the relation between supermoduli integration and picture changing operators (PCOs) particularly concerning the role of vertical integration, in the context of superstring vacuum amplitudes, by an explicit comparison of different ...
Charles Wang, Xi Yin
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The Universality of M-branes [PDF]
, 1996 We review the evidence for the various dualities amongst the five D=10 superstring theories and for the existence of M-theory using the associated effective supergravity theories.
Papadopoulos, G.
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Ambitwistor strings in six and five dimensions
Journal of High Energy Physics, 2021 Ambitwistor strings are chiral (holomorphic) strings whose target is the space of complex null geodesics, ambitwistor space. We introduce twistor representations of ambitwistor space in 6 and 5 dimensions.
Yvonne Geyer +2 more
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