The Effective Field Theory of nonsingular cosmology
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DOI: 10.1007/jhep01(2017)090
Abstract: A bstractIn this paper, we explore the nonsingular cosmology within the framework of the Effective Field Theory (EFT) of cosmological perturbations. Due to the recently proved no-go theorem, any nonsingular cosmological models based on the… read more here.
Keywords: effective field; cosmology; field theory; nonsingular cosmology ... See more keywords
Holographic chiral algebra: supersymmetry, infinite Ward identities, and EFTs
Sign Up to like & getrecommendations! Published in 2022 at "Journal of High Energy Physics"
DOI: 10.1007/jhep01(2022)113
Abstract: Celestial holography promisingly reformulates the scattering amplitude holographically in terms of celestial conformal field theory living at null infinity. Recently, an infinite-dimensional symmetry algebra was discovered in Einstein-Yang-Mills theory. The starting point in the derivation… read more here.
Keywords: algebra; symmetry; sub leading; ward identities ... See more keywords
Exploring the geometry of supersymmetric double field theory
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DOI: 10.1007/jhep01(2022)152
Abstract: The geometry of N $$ \mathcal{N} $$ = 1 supersymmetric double field theory is revisited in superspace. In order to maintain the constraints on the torsion tensor, the local tangent space group of O( D… read more here.
Keywords: double field; theory; geometry; supersymmetric double ... See more keywords
Initial value problem in string-inspired nonlocal field theory
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DOI: 10.1007/jhep01(2022)167
Abstract: We consider a nonlocal scalar field theory inspired by the tachyon action in open string field theory. The Lorentz-covariant action is characterized by a parameter ξ 2 that quantifies the amount of nonlocality. Restricting to… read more here.
Keywords: formulation; field; theory; initial value ... See more keywords
A theory of reparameterizations for AdS3 gravity
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DOI: 10.1007/jhep02(2019)079
Abstract: A bstractWe rewrite the Chern-Simons description of pure gravity on global AdS3 and on Euclidean BTZ black holes as a quantum field theory on the AdS boundary. The resulting theory is (two copies of) the… read more here.
Keywords: theory reparameterizations; theory; ads3 gravity; gravity ... See more keywords
Decoherence in Conformal Field Theory
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DOI: 10.1007/jhep02(2020)170
Abstract: Noise sources are ubiquitous in Nature and give rise to a description of quantum systems in terms of stochastic Hamiltonians. Decoherence dominates the noise-averaged dynamics and leads to dephasing and the decay of coherences in… read more here.
Keywords: time; decoherence conformal; decoherence; conformal field ... See more keywords
Discreteness and integrality in Conformal Field Theory
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DOI: 10.1007/jhep02(2021)064
Abstract: Abstract Various observables in compact CFTs are required to obey positivity, discreteness, and integrality. Positivity forms the crux of the conformal bootstrap, but understanding of the abstract implications of discreteness and integrality for the space… read more here.
Keywords: physics; integrality; conformal field; integrality conformal ... See more keywords
Light bending from eikonal in worldline quantum field theory
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DOI: 10.1007/jhep02(2022)209
Abstract: Using the worldline quantum field theory (WQFT) formalism for classical scattering, we study the deflection of light by a heavy massive spinless/spinning object. WQFT requires the use of the worldline dressed propagator of a photon… read more here.
Keywords: field theory; quantum field; worldline quantum;
More on stubs in open string field theory
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DOI: 10.1007/jhep02(2025)017
Abstract: We continue our analysis of open string field theory based on A∞-algebras obtained from Witten’s theory by attaching stubs to the elementary vertex. Classical solutions of the new theory can be obtained from known analytic… read more here.
Keywords: open string; string field; field theory; stubs open ... See more keywords
Boundary terms in string field theory
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DOI: 10.1007/jhep02(2025)058
Abstract: We supplement the string field theory action with boundary terms to make its variational principle well-posed. Central to our considerations is the violation of the stress-energy tensor conservation in non-compact CFTs due to the boundary… read more here.
Keywords: terms string; string field; field theory; action ... See more keywords
Cancellation of divergences up to three loops in exceptional field theory
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DOI: 10.1007/jhep03(2018)100
Abstract: A bstractWe consider the tetrahedral three-loop diagram in Ed exceptional field theory evaluated as a scalar diagram for four external gravitons. At lowest order in momenta, this diagram contributes to the ∇6R4 term in the… read more here.
Keywords: cancellation divergences; theory; field theory; divergences three ... See more keywords