Results 71 to 80 of about 167,280 (171)
Fortschritte der Physik, Volume 74, Issue 4, April 2026.Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
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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
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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
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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
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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 +3 more
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Backreaction in closed string tachyon condensation [PDF]
Journal of High Energy Physics, 2008 We consider backreaction due to production of massless strings in the background of a condensing closed string tachyon. Working in the region of weak tachyon, we find the modified equations of motion for massless strings with conformal perturbation theory.
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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 +2 more
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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
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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 +2 more
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Tachyon condensation on the brane antibrane system [PDF]
Journal of High Energy Physics, 1998 A coincident D-brane - anti-D-brane pair has a tachyonic mode. We present an argument showing that at the classical minimum of the tachyonic potential the negative energy density associated with the potential exactly cancels the sum of the tension of the brane and the anti-brane, thereby giving a configuration of zero energy density and restoring space-
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