Results 21 to 30 of about 115,105,043 (204)

Entanglement content of quantum particle excitations. Part II. Disconnected regions and logarithmic negativity

Journal of High Energy Physics, 2019
In this paper we study the increment of the entanglement entropy and of the (replica) logarithmic negativity in a zero-density excited state of a free massive bosonic theory, compared to the ground state.
Olalla A. Castro-Alvaredo, Cecilia De Fazio, Benjamin Doyon, István M. Szécsényi   +3 more
doaj   +1 more source

Logarithmic negativity in quantum Lifshitz theories

Journal of High Energy Physics, 2020
We investigate quantum entanglement in a non-relativistic critical system by calculating the logarithmic negativity of a class of mixed states in the quantum Lifshitz model in one and two spatial dimensions.
J. Angel-Ramelli, C. Berthiere, V. Giangreco M. Puletti, L. Thorlacius   +3 more
doaj   +1 more source

BPS skyrmions of generalized Skyrme model in higher dimensions

Journal of High Energy Physics, 2022
In this work we consider the higher dimensional Skyrme model, with spatial dimension d > 3, focusing on its BPS submodels and their corresponding features.
Emir Syahreza Fadhilla, Bobby Eka Gunara, Ardian Nata Atmaja   +2 more
doaj   +1 more source

Scattering Amplitudes of Massive N=2 Gauge Theories in Three Dimensions [PDF]

, 2013
We study the scattering amplitudes of mass-deformed Chern-Simons theories and Yang-Mills-Chern-Simons theories with N=2 supersymmetry in three dimensions. In particular, we derive the on-shell supersymmetry algebras which underlie the scattering matrices
Agarwal, Abhishek, Agarwal, A, Young, Donovan, Young, Donovan,, Lipstein, AE, Young, D, Lipstein, Arthur E.   +6 more
core   +1 more source

The complex sinh-Gordon model: form factors of descendant operators and current-current perturbations

Journal of High Energy Physics, 2019
We study quasilocal operators in the quantum complex sinh-Gordon theory in the form factor approach. The free field procedure for descendant operators is developed by introducing the algebra of screening currents and related algebraic objects.
Michael Lashkevich, Yaroslav Pugai
doaj   +1 more source

A note on the S-matrix bootstrap for the 2d O(N) bosonic model

Journal of High Energy Physics, 2018
In this work we apply the S-matrix bootstrap maximization program to the 2d bosonic O(N) integrable model which has N species of scalar particles of mass m and no bound states.
Yifei He, Andrew Irrgang, Martin Kruczenski   +2 more
doaj   +1 more source

Off-shell CHY amplitudes and Feynman graphs

Journal of High Energy Physics, 2020
A polynomial form is established for the off-shell CHY scattering equations proposed by Lam and Yao. Re-expressing this in terms of independent Mandelstam invariants provides a new expression for the polynomial scattering equations, immediately valid off
Louise Dolan, Peter Goddard
doaj   +1 more source

Entanglement of harmonic systems in squeezed states

Journal of High Energy Physics, 2023
The entanglement entropy of a free scalar field in its ground state is dominated by an area law term. It is noteworthy, however, that the study of entanglement in scalar field theory has not advanced far beyond the ground state.
D. Katsinis, G. Pastras, N. Tetradis
doaj   +1 more source

One-loop CHY-integrand of bi-adjoint scalar theory

Journal of High Energy Physics, 2020
In this paper, the one-loop CHY-integrands of bi-adjoint scalar theory has been reinvestigated. Differing from previous constructions, we have explicitly removed contributions from tadpole and massless bubbles when taking the forward limit of ...
Bo Feng, Chang Hu
doaj   +1 more source

Type II defects revisited

Journal of High Energy Physics, 2018
Energy and momentum conservation in the context of a type II, purely transmitting, defect, within a single scalar relativistic two-dimensional field theory, places a severe constraint not only on the nature of the defect but also on the potentials for ...
E. Corrigan, C. Zambon
doaj   +1 more source