Results 61 to 70 of about 185 (152)

Classical Solution for Ghost D‐Branes in String Field Theory

Advances in High Energy Physics, Volume 2017, Issue 1, 2017., 2017
Ghost D‐branes have been proposed as objects that cancel the effects of D‐branes. We construct a classical solution which represents an arbitrary number of D‐branes and ghost D‐branes in the context of open string field theory. Cancellation of BRST cohomology between D‐branes and ghost D‐branes is shown.
Syoji Zeze, Elias C. Vagenas
wiley   +1 more source

Comments on real tachyon vacuum solution without square roots

Journal of High Energy Physics, 2018
We analyze the consistency of a recently proposed real tachyon vacuum solution without square roots in open bosonic string field theory. We show that the equation of motion contracted with the solution itself is satisfied.
E. Aldo Arroyo
doaj   +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

Aspects of Moduli Stabilization in Type IIB String Theory

Advances in High Energy Physics, Volume 2016, Issue 1, 2016., 2016
We review moduli stabilization in type IIB string theory compactification with fluxes. We focus on KKLT and Large Volume Scenario (LVS). We show that the predicted soft SUSY breaking terms in KKLT model are not phenomenological viable. In LVS, the following result for scalar mass, gaugino mass, and trilinear term is obtained: m0 = m1/2 = −A0 = m3/2 ...
Shaaban Khalil, Ahmad Moursy, Ali Nassar, Elias C. Vagenas   +3 more
wiley   +1 more source

Rolling near the tachyon vacuum

Journal of High Energy Physics, 2020
In a linear dilaton background, it has been argued that an unstable D-brane can decay to the tachyon vacuum without leaving behind a remnant of tachyon matter.
Theodore Erler, Toru Masuda, Martin Schnabl   +2 more
doaj   +1 more source

Celestial Topology, Symmetry Theories, and Evidence for a NonSUSY D3‐Brane CFT

Fortschritte der Physik, Volume 73, Issue 4, April 2025.
Abstract Symmetry Theories (SymThs) provide a flexible framework for analyzing the global categorical symmetries of a D$D$‐dimensional QFTD$\text{QFT}_{D}$ in terms of a (D+1)$(D+1)$‐dimensional bulk system SymThD+1$\text{SymTh}_{D+1}$. In QFTs realized via local string backgrounds, these SymThs naturally arise from dimensional reduction of the linking
Jonathan J. Heckman, Max Hübner
wiley   +1 more source

Self‐Dual Configurations in a Generalized Abelian Chern‐Simons‐Higgs Model with Explicit Breaking of the Lorentz Covariance

Advances in High Energy Physics, Volume 2016, Issue 1, 2016., 2016
We have studied the existence of self‐dual solitonic solutions in a generalization of the Abelian Chern‐Simons‐Higgs model. Such a generalization introduces two different nonnegative functions, ω1(|ϕ|) and ω(|ϕ|), which split the kinetic term of the Higgs field, |Dμϕ|2 → ω1(|ϕ|) | D0ϕ|2 − ω(|ϕ|) | Dkϕ|2, breaking explicitly the Lorentz covariance.
Rodolfo Casana, Lucas Sourrouille, Edward Sarkisyan-Grinbaum   +2 more
wiley   +1 more source

Spiked instantons from intersecting D-branes

Nuclear Physics B, 2017
The moduli space of spiked instantons that arises in the context of the BPS/CFT correspondence [22] is realised as the moduli space of classical vacua, i.e.
Nikita Nekrasov, Naveen S. Prabhakar
doaj   +1 more source

Open String Renormalization Group Flow as a Field Theory

Fortschritte der Physik, Volume 72, Issue 11, November 2024.
Abstract This article shows that the integral flow‐lines of the RG‐flow of open string theory can be interpreted as the solitons of a Hořova–Lifshitz sigma‐model of open membranes. The authors argue that the effective background description of this model implies the g‐theorem of open string theory.
Julius Hristov
wiley   +1 more source

Interacting Dark Matter and q‐Deformed Dark Energy Nonminimally Coupled to Gravity

Advances in High Energy Physics, Volume 2016, Issue 1, 2016., 2016
In this paper, we propose a new approach to study the dark sector of the universe by considering the dark energy as an emerging q‐deformed bosonic scalar field which is not only interacting with the dark matter, but also nonminimally coupled to gravity, in the framework of standard Einsteinian gravity.
Emre Dil, Sergei D. Odintsov
wiley   +1 more source