Results 71 to 80 of about 130,847 (255)

Fermionic subspaces of the bosonic string [PDF]

Classical and Quantum Gravity, 2003
A universal symmetric truncation of the bosonic string Hilbert space yields all known closed fermionic string theories in ten dimensions, their D-branes and their open descendants. We highlight the crucial role played by group theory and two-dimensional conformal field theory in the construction and emphasize the predictive power of the truncation ...
Houart, Laurent, Chattaraputi, Auttakit, Englert, François, Taormina, Anne   +3 more
openaire   +4 more sources

Simultaneous Bosonic and Fermionic T‐Dualization of the Type II Superstring Theory—Buscher Approach and Double Space Representation

Fortschritte der Physik, Volume 74, Issue 1, January 2026.
Abstract In this article I consider type II superstring in the pure spinor formulation with constant background fields in the context of T‐dualization. First, I prove that bosonic and fermionic T‐dualization commute using already known T‐dual transformation laws for bosonic and fermionic T‐dualization.
B. Nikolić
wiley   +1 more source

Canonical description of T-duality with NSNS background

Journal of High Energy Physics, 2020
We study T-duality with non-zero components of NSNS two form field along directions we dualize with the help of canonical formalism. As a result of this procedure we determine generalized Buscher’s rules.
J. Klusoň
doaj   +1 more source

New Form of the T-Duality Due to the Stability of a Compact Dimension

, 2008
We study behaviors of a compact dimension and the $T$-duality, in the presence of the wrapped closed bosonic strings. When the closed strings interact and form another system of strings, the radius of compactification increases.
A. Giveon, Davoud Kamani, E. Ponton, G. Gersdorff von, H. Nikolic, J. Garriga, J. Polchinski, J. Polchinski, M.J. Bowick, N. Maru, P.S. Aspinwall, R.H. Brandenberger, S. Frautschi, T. Appelquist   +13 more
core   +1 more source

Comments on the RG‐Flow in Open String Field Theory

Fortschritte der Physik, Volume 73, Issue 12, December 2025.
Abstract We define a metric G$G$ on the KBc‐subalgebra modulo gauge and describe the worldsheet RG‐flow as the gradient flow of the action of cubic open string field theory, where the flow lines are kink‐solitons. In particular, for a constant tachyon the gradient flow equations are equivalent to the RG‐equations. Additionally, a more general family of
Julius Hristov
wiley   +1 more source

GAN Decoder on a Quantum Toric Code for Noise‐Robust Quantum Teleportation

Advanced Quantum Technologies, Volume 8, Issue 11, November 2025.
This study proposes a novel quantum topological code decoder using generative adversarial networks (GANs). By training the GAN with eigenvalue datasets, an enhanced decoding threshold and robust quantum teleportation under depolarizing noise are achieved.
Jiaxin Li, Zhimin Wang, Alberto Ferrara, Yongjian Gu, Rosario Lo Franco   +4 more
wiley   +1 more source

When strings surprise

Journal of High Energy Physics
We argue that on-shell excitations with large negative energies are created rapidly when the string coupling increases with time. This does not indicate an inconsistency in string theory since the negative energy on-shell excitation is always entangled ...
Nissan Itzhaki, Uri Peleg
doaj   +1 more source

Stringy scaling of n-point Regge string scattering amplitudes

Journal of High Energy Physics, 2023
We discover a stringy scaling behavior for a class of n-point Regge string scattering amplitudes (RSSA). The number of independent kinematics variables is found to be reduced by dim M $$ \mathcal{M} $$ .
Sheng-Hong Lai, Jen-Chi Lee, Yi Yang
doaj   +1 more source

Spinor and Twistor Formulations of Tensionless Bosonic Strings in Four Dimensions [PDF]

, 2010
Spinor and twistor formulations of tensionless bosonic strings in 4-dimensional Minkowski space are constructed. We begin with a first-order action that is equivalent to the Nambu-Goto action in the tensionful case and that leads to a spinorial action in
S. Deguchi, T. Egami, Jun-ichi Note
semanticscholar   +1 more source

Energy Symmetry Breaking of Dirac and Weyl Fermions in Magnetized Spinning Conical Geometries

Advanced Theory and Simulations, Volume 8, Issue 10, October 2025.
Exact solutions for relativistic fermions in magnetized, spinning conical geometries reveal defect‐induced symmetry breaking between fermion and antifermion energies. Energy levels depend on the magnetic field, background geometry, and fractionalized spin. When the defect's spin dominates, quantum effects diminish.
Abdullah Guvendi, Omar Mustafa
wiley   +1 more source