Results 101 to 110 of about 5,303 (156)

Jumping spectra and vanishing couplings in heterotic Line Bundle Standard Models

open access: yesJournal of High Energy Physics, 2019
We study two aspects of the physics of heterotic Line Bundle Standard Models on smooth Calabi-Yau threefolds. First, we investigate to what degree modern moduli stabilization scenarios can affect the standard model spectrum in such compactifications ...
James Gray, Juntao Wang
doaj   +1 more source

Universal Thermal Instabilities and the High-Temperature Phase of the N=4 Superstrings [PDF]

open access: yes, 1999
Using the properties of gauged N=4 supergravity, we show that it is possible to derive a universal thermal effective potential that describes all possible high-temperature instabilities of the known N=4 superstrings.
Kounnas, Costas
core   +2 more sources

Amplitudes on plane waves from ambitwistor strings

open access: yesJournal 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

Momumentum Analyticity and Finiteness of Compactified String Amplitudes, Part I: Tori

open access: yes, 1997
We generalize to the case of compactified superstrings a construction given previously for critical superstrings of finite one loop amplitudes that are well-defined for all external momenta.
't Hooft   +19 more
core   +1 more source

Compactification of D=11 supergravity on spaces of exceptional holonomy

open access: yes, 1995
We investigate the compactification of D=11 supergravity to D=5,4,3, on compact manifolds of holonomy $SU(3)$ (Calabi-Yau), $G_2$, and $Spin(7)$, respectively, making use of examples of the latter two cases found recently by Joyce. In each case the lower
Awada   +48 more
core   +2 more sources

M-Phenomenology [PDF]

open access: yes, 1997
Recent developments involving strongly coupled superstrings are discussed from a phenomenological point of view. In particular, strongly coupled $E_8\times E'_8$ is described as an appropriate long-wavelength limit of M-theory, and some generic ...
Nanopoulos, D. V.
core   +2 more sources

Spin-Statistics Violations in Superstring Theory

open access: yes, 2008
I describe how superstring theory may violate spin-statistics in an experimentally observable manner. Reviewing the basics of superstring interactions and how to utilize these to produce a statistical phase, I then apply these ideas to two specific ...
A. Y. Ignatiev   +2 more
core   +1 more source

Rounding out the story of higher derivative consistent truncations

open access: yesJournal of High Energy Physics
At the two-derivative order, the group manifold reduction of heterotic supergravity on S 3 results in a half-maximal 7D gauged supergravity coupled to three vector multiplets, and a further truncation can be taken to remove the vector multiplets.
James T. Liu, Robert J. Saskowski
doaj   +1 more source

Home - About - Disclaimer - Privacy