Results 11 to 20 of about 1,415,557 (286)
Effective field theories in R ξ gauges [PDF]
Journal of High Energy Physics, 2019 In effective quantum field theories, higher dimensional operators can affect the canonical normalization of kinetic terms at tree level. These contributions for scalars and gauge bosons should be carefully included in the gauge fixing procedure, in order
M. Misiak +4 more
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Causal effective field theories
Physical Review D, 2022 Physical principles such as unitarity, causality, and locality can constrain the space of consistent effective field theories (EFTs) by imposing two-sided bounds on the allowed values of Wilson coefficients. In this paper, we consider the bounds that arise from the requirement of low-energy causality alone, without appealing to any assumptions about UV
Mariana Carrillo González +3 more
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Constructing operator basis in supersymmetry: a Hilbert series approach
Journal of High Energy Physics, 2023 In this paper we introduce a Hilbert series approach to build the operator basis for a N = 1 supersymmetry theory with chiral superfields. We give explicitly the form of the corrections that remove redundancies due to the equations of motion and ...
Antonio Delgado +2 more
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Spin supplementary condition in quantum field theory: covariant SSC and physical state projection
Journal of High Energy Physics, 2023 The spin supplementary conditions are constraints on spin degrees of freedom in classical relativity which restricts physical degrees of freedom to rotations.
Jung-Wook Kim, Jan Steinhoff
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Bell violation in 2 → 2 scattering in photon, gluon and graviton EFTs
Journal of High Energy Physics, 2023 In this paper, we explore Bell inequality violation for 2 → 2 scattering in Effective Field Theories (EFTs) of photons, gluons, and gravitons. Using the CGLMP Bell parameter (I 2), we show that, starting from an appropriate initial non-product state, the
Diptimoy Ghosh, Rajat Sharma
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Journal of High Energy Physics, 2023 We derive the causality and unitarity constraints on dimension 6 and dimension 8 Gluon field strength operators in the Standard Model Effective Field Theory (SMEFT). In the first part of the paper, we use the ‘amplitude analysis’ i.e. dispersion relation
Diptimoy Ghosh +2 more
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Firewall from Effective Field Theory [PDF]
Universe, 2021 For an effective field theory in the background of an evaporating black hole with spherical symmetry, we consider non-renormalizable interactions and their relevance to physical effects. The background geometry is determined by the semi-classical Einstein equation for an uneventful horizon where the vacuum energy–momentum tensor is small for freely ...
Pei-Ming Ho, Yuki Yokokura
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Effective field theories and inflationary magnetogenesis
Physics Letters B, 2021 The effective approach is applied to the analysis of inflationary magnetogenesis. Rather than assuming a particular underlying description, all the generally covariant terms potentially appearing with four space-time derivatives in the effective action ...
Massimo Giovannini
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Holographic Schwinger-Keldysh effective field theories
Journal of High Energy Physics, 2019 We construct a holographic dual of the Schwinger-Keldysh effective action for the dissipative low-energy dynamics of relativistic charged matter at strong coupling in a fixed thermal background.
Jan de Boer +2 more
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Hidden Conformal Invariance of Scalar Effective Field Theories [PDF]
, 2020 We argue that conformal invariance is a common thread linking several scalar effective field theories that appear in the double copy and scattering equations.
Cheung, Clifford +2 more
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