Results 31 to 40 of about 686 (196)
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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Instanton effects in supersymmetric theories
Nuclear Physics B, 1983 Abstract We calculate some simplest n-point functions in supersymmetric Yang-Mills theories contributed by instantons. The result is not vanishing and we discuss some implications of this. In particular, the dynamics of the supersymmetric theories must exhibit some unusual features.
V.A. Novikov +3 more
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Ghost-free vector superfield actions in supersymmetric higher-derivative theories
Journal of High Energy Physics, 2017 We systematically construct ghost-free higher-derivative actions of Abelian vector supermultiplets in four-dimensional N = 1 $$ \mathcal{N}=1 $$ global supersymmetric theories.
Toshiaki Fujimori +4 more
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Journal of High Energy Physics, 2018 We give an explicit superspace construction of higher spin conserved supercurrents built out of 4D, N=1 $$ \mathcal{N}=1 $$ massless supermultiplets of arbitrary spin.
I. L. Buchbinder +2 more
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One-loop effective potential in nonlocal supersymmetric theories [PDF]
Physical Review D, 2017 Within the superfield approach, we consider the nonlocal generalization of the Wess-Zumino model and calculate the one-loop low-energy contributions to the effective action. Four different nonlocal models are considered, among which only the first model does not reduce to the standard Wess-Zumino model when we take the parameter of nonlocality of the ...
de Mello, E. R. Bezerra +3 more
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Curvature squared action in four dimensional N = 2 supergravity using the dilaton Weyl multiplet
Journal of High Energy Physics, 2021 In this paper we derive the most general curvature squared action coupled to an arbitrary number of vector multiplets in four dimensional N = 2 supergravity using the dilaton Weyl multiplet.
Madhu Mishra, Bindusar Sahoo
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ON THE DETERMINATION OF EFFECTIVE POTENTIALS IN SUPERSYMMETRIC THEORIES [PDF]
Physics Letters B, 1982 Abstract We propose a renormalization procedure for dynamically generated effective actions. We show that, as expected, it leads to no spontaneous supersymmetry breaking if this is unbroken at the tree level. We also understand why the usually adopted renormalization prescription has led in some models to an apparent supersymmetry breaking for an ...
D. Amati, Kuang-chao Chou
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Circumnavigating collinear superspace
Journal of High Energy Physics, 2020 In this paper, we extend the collinear superspace formalism to include the full range of N $$ \mathcal{N} $$ = 1 supersymmetric interactions. Building on the effective field theory rules developed in a companion paper — Navigating Collinear Superspace [1]
Timothy Cohen +3 more
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Navigating collinear superspace
Journal of High Energy Physics, 2020 We introduce a new set of effective field theory rules for constructing Lagrangians with N $$ \mathcal{N} $$ = 1 supersymmetry in collinear superspace. In the standard superspace treatment, superfields are functions of the coordinates x μ θ α θ † α ⋅ $$ \
Timothy Cohen +3 more
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Ghostbusters: unitarity and causality of non-equilibrium effective field theories
Journal of High Energy Physics, 2020 : For a non-equilibrium physical system defined along a closed time path (CTP), a key constraint is the so-called largest time equation, which is a consequence of unitarity and implies causality.
Ping Gao, Paolo Glorioso, Hong Liu
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