Results 61 to 70 of about 35,578 (258)

Fermion masses in superstring theory [PDF]

Nuclear Physics B - Proceedings Supplements, 1995
We give a model-independent discussion of fermion masses in four-dimensional heterotic superstring theories. We discuss the tree level contributions and quantum corrections, including one-loop threshold effects and masses generated as a result of non-perturbative supersymmetry breaking. We also point out that superstring models give rise to a generic $
Antoniadis, I., Taylor, T. R.
openaire   +2 more sources

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

Supersymmetry in open superstring field theory

Journal of High Energy Physics, 2017
We realize the 16 unbroken supersymmetries on a BPS D-brane as invariances of the action of the corresponding open superstring field theory. We work in the small Hilbert space approach, where a symmetry of the action translates into a symmetry of the ...
Theodore Erler
doaj   +1 more source

$D5$-brane type I superstring background fields in terms of type IIB ones by canonical method and T-duality approach [PDF]

, 2010
We consider type IIB superstring theory with embedded $D5$-brane and choose boundary conditions which preserve half of the initial supersymmetry. In the canonical approach that we use, boundary conditions are treated as canonical constraints.
B. Nikolić, B. Sazdović, Becker, Benichou, Berkovits, Berkovits, Buscher, de Boer, Duff, Giveon, Grassi, Grassi, Grassi, Grassi, Kiritsis, Nikolić, Nikolić, Nikolić, Nikolić, Polchinski, Sazdović, Seiberg   +21 more
core   +1 more source

Tachyon condensation in superstring field theory [PDF]

Nuclear Physics B, 2000
It has been conjectured that at the stationary point of the tachyon potential for the D-brane-anti-D-brane pair or for the non-BPS D-brane of superstring theories, the negative energy density cancels the brane tensions. We study this conjecture using a Wess-Zumino-Witten-like open superstring field theory free of contact term divergences and recently ...
Berkovits, Nathan, Sen, Ashoke, Zwiebach, Barton   +2 more
openaire   +3 more sources

The three‐dimensional Seiberg–Witten equations for 3/2$3/2$‐spinors: A compactness theorem

Mathematische Nachrichten, Volume 298, Issue 10, Page 3331-3375, October 2025.
Abstract The Rarita‐Schwinger–Seiberg‐Witten (RS–SW) equations are defined similarly to the classical Seiberg–Witten equations, where a geometric non–Dirac‐type operator replaces the Dirac operator called the Rarita–Schwinger operator. In dimension 4, the RS–SW equation was first considered by the second author (Nguyen [J. Geom. Anal. 33(2023), no. 10,
Ahmad Reza Haj Saeedi Sadegh, Minh Lam Nguyen   +1 more
wiley   +1 more source

RNS superstring measure for genus 3

Journal of High Energy Physics
We propose a new formula for the RNS superstring measure for genus 3. Our derivation is based on invariant theory. We follow Witten’s idea of using an algebraic parametrization of the moduli space (which he applied to re-derive D’Hoker and Phong’s ...
P. Dunin-Barkowski, I. Fedorov, A. Sleptsov   +2 more
doaj   +1 more source

Galilean Supersymmetry in 2+1 Dimensions [PDF]

, 1996
We review work done in collaboration with C.B. Thorn on Super-Galilei invariant field theory and its application to the reformulation of superstring theory in terms of constituent superstring-bits.Comment: 10 pages, Latex.
Bergman, Oren
core   +3 more sources

Effective μ-term in superstring theory [PDF]

Nuclear Physics B, 1994
In four-dimensional compactifications of the heterotic superstring theory the K hler potential has a form which generically induces a superpotential mass term for Higgs particles once supersymmetry is broken at low energies. This ``$ $-term'' is analyzed in a model-independent way at the tree level and in the one-loop approximation, and explicit ...
Antoniadis, I., Gava, E., Narain, K. S., Taylor, T. R.   +3 more
openaire   +3 more sources

Unification of Conformal and Fuzzy Gravities With Internal Interactions Resulting in SO(10) and a Possible Probe Through Stochastic Gravitational Wave Background

Fortschritte der Physik, Volume 73, Issue 9-10, October 2025.
Abstract The unification of conformal and fuzzy gravities with internal interactions is based on the facts that i) the tangent group of a curved manifold and the manifold itself do not necessarily have the same dimensions and ii) both gravitational theories considered here have been formulated in a gauge theoretic way.
Gregory Patellis, Danai Roumelioti, Stelios Stefas, George Zoupanos   +3 more
wiley   +1 more source