Results 81 to 90 of about 1,098 (225)

New BPS states from bosonic/heterotic duality

Journal of High Energy Physics
In this paper, we consider the recently proposed bosonic/heterotic duality that relates the heterotic superstrings to the noncritical bosonic string. Although the latter is nonsupersymmetric, it can be viewed as pseudo-supersymmetric in that the theory ...
Kai-Peng Lu, H. Lü, Liang Ma
doaj   +1 more source

Trotterless Simulation of Open Quantum Systems for NISQ Quantum Devices

Advanced Quantum Technologies, Volume 8, Issue 1, January 2025.
Open quantum systems exhibit complex dynamics that can be simulated on quantum computers to provide physical insights into their behavior. This work proposes a new method for simulating these systems that reduces the effect of noise and errors on modern quantum hardware.
Colin Burdine, Enrique P. Blair
wiley   +1 more source

Matrix models as non-local hidden variables theories [PDF]

, 2001
It is shown that the matrix models which give non-perturbative definitions of string and M theory may be interpreted as non-local hidden variables theories in which the quantum observables are the eigenvalues of the matrices while their entries are the ...
Smolin, Lee
core  

Worldsheet instantons and the amplitude for string pair production in an external field as a WKB exact functional integral

Journal of High Energy Physics, 2018
We revisit the problem of charged string pair creation in a constant external electric field. The string states are massive and creation of pairs from the vacuum is a tunnelling process, analogous to the Schwinger process where charged particle-anti ...
James Gordon, Gordon W. Semenoff
doaj   +1 more source

Torus bundles, automorphisms and T-duality

Journal of High Energy Physics, 2021
We reconsider some older constructions of T-duality, based on automorphisms of the worldsheet operator algebra, in a modern context. It has been long known that at special points in the moduli space of torus compactifications, the target space gauge ...
H. Mahmood, R. A. Reid-Edwards
doaj   +1 more source

Harmonic balls in Liouville quantum gravity

Proceedings of the London Mathematical Society, Volume 130, Issue 1, January 2025.
Abstract Harmonic balls are domains that satisfy the mean‐value property for harmonic functions. We establish the existence and uniqueness of harmonic balls on Liouville quantum gravity (LQG) surfaces using the obstacle problem formulation of Hele–Shaw flow.
Ahmed Bou‐Rabee, Ewain Gwynne
wiley   +1 more source

Mirror Symmetry and Other Miracles in Superstring Theory [PDF]

, 2010
The dominance of string theory in the research landscape of quantum gravity physics (despite any direct experimental evidence) can, I think, be justified in a variety of ways.
Dean Rickles, Rickles, Dean
core   +1 more source

A new approach to superstring

Journal of High Energy Physics
We show how starting with one-string space of states in BRST formalism one can construct a large class of physical quantities containing, in particular, scattering amplitudes for bosonic string and superstring.
A. Schwarz
doaj   +1 more source

Multiloop soft theorem for gravitons and dilatons in the bosonic string

Journal of High Energy Physics, 2019
We construct, in the closed bosonic string, the multiloop amplitude involving N tachyons and one massless particle with 26 − D compactified directions, and we show that at least for D > 4, the soft behaviors of the graviton and dilaton satisfy the same ...
Paolo Di Vecchia, Raffaele Marotta, Matin Mojaza   +2 more
doaj   +1 more source

Symmetries in the Hamiltonian Formulation of String Theory

Advances in High Energy Physics, Volume 2025, Issue 1, 2025.
In the context of the Hamiltonian formulation of string theory, a widely acknowledged issue is the inability of the first‐class constraints to accurately reproduce the Lagrangian symmetry transformations. We take a critical look at the Hamiltonian formulation of the Polyakov string and demonstrate, using Castellani′s procedure, that diffeomorphism and ...
Héctor A. Benítez, René Negrón, Xiao Yan Chew   +2 more
wiley   +1 more source