Results 51 to 60 of about 2,664,445 (176)
Near-Hagedorn Thermodynamics and Random Walks: a General Formalism in Curved Backgrounds [PDF]
, 2014 In this paper we discuss near-Hagedorn string thermodynamics starting from the explicit path integral derivation recently found by JHEP 0607 (2006) 031. Their result is extended and the validity is checked by comparing with some known exact results.
Mertens, T. G. +2 more
core +3 more sources
Supergravity solitons and non-perturbative superstrings [PDF]
Nucl.Phys.Proc.Suppl. 45BC (1996) 188-195, 1995 A review is given of the implications of supersymmetric black holes for the non-perturbative formulation of toroidally compactified superstrings, with particular emphasis on symmetry enhancement at special vacua and S-duality of the heterotic string.
arxiv +1 more source
The Landscape, the Swampland and the Era of Precision Cosmology
Fortschritte der Physik, Volume 67, Issue 1-2, January-February 2019., 2019 Abstract We review the advanced version of the KKLT construction and pure de Sitter supergravity, involving a nilpotent multiplet, with regard to various conjectures that de Sitter state cannot exist in string theory. We explain why we consider these conjectures problematic and not well motivated, and why the recently proposed alternative string theory
Yashar Akrami +3 more
wiley +1 more source
Amplitudes on plane waves from ambitwistor strings
Journal of High Energy Physics, 2017 In marked contrast to conventional string theory, ambitwistor strings remain solvable worldsheet theories when coupled to curved background fields. We use this fact to consider the quantization of ambitwistor strings on plane wave metric and plane wave ...
Tim Adamo +3 more
doaj +1 more source
Dilaton vertices of the closed superstring and the heterotic string
Physics Letters B, 1988 Abstract BRST - and conformally invariant dilaton vertices of the closed superstring and the heterotic string are constructed, whose counter terms are consistent with the dilaton terms introduced in the non-linear sigma model approach of string theory.
openaire +2 more sources
SO(10)-like Superstring Standard Model with R-parity from the Heterotic String
, 2007 Submitted for the SUSY07 proceedings, 4 pages ...
Kim, Jihn E., Kim, Ji-Hun, Kyae, Bumseok
openaire +2 more sources
Gravity, Strings and Particles: A Journey Into the Unknown
, 2014 Preface.- Prologue: inside the energy walls of our cradle.- Gravity at small distances.- New fundamental forces of Nature?.- The graviphoton and the dilaton.- Chamaleons and fat gravitons.- New dimensions of space?.- The compact scenario.- The Kaluza ...
M. Gasperini
semanticscholar +1 more source
Tree-level S-matrix of superstring field theory with homotopy algebra structure [PDF]
, 2020 We show that the tree-level S-matrices of the superstring field theories based on the homotopy-algebra structure agree with those obtained in the first-quantized formulation. The proof is given in detail for the heterotic string field theory. The extensions to the type II and open superstring field theories are straightforward.
arxiv +1 more source
CCNV Space‐Times as Potential Supergravity Solutions
Advances in Mathematical Physics, Volume 2018, Issue 1, 2018., 2018 It is of interest to study supergravity solutions preserving a nonminimal fraction of supersymmetries. A necessary condition for supersymmetry to be preserved is that the space‐time admits a Killing spinor and hence a null or time‐like Killing vector field.
A. Coley +3 more
wiley +1 more source
Modular graph functions and odd cuspidal functions. Fourier and Poincaré series
Journal of High Energy Physics, 2019 Modular graph functions are SL(2, ℤ)-invariant functions associated with Feynman graphs of a two-dimensional conformal field theory on a torus of modulus τ. For one-loop graphs they reduce to real analytic Eisenstein series. We obtain the Fourier series,
Eric D’Hoker, Justin Kaidi
doaj +1 more source