Results 41 to 50 of about 397,717 (356)
Relativistic N-particle energy shift in finite volume
Journal of High Energy Physics, 2021 We present a general method for deriving the energy shift of an interacting system of N spinless particles in a finite volume. To this end, we use the nonrelativistic effective field theory (NREFT), and match the pertinent low-energy constants to the ...
Fernando Romero-López +3 more
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Moments of Ioffe time parton distribution functions from non-local matrix elements
Journal of High Energy Physics, 2018 We examine the relation of moments of parton distribution functions to matrix elements of non-local operators computed in lattice quantum chromodynamics.
Joseph Karpie +2 more
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Critical 1- and 2-point spin correlations for the O(2) model in 3d bounded domains
Journal of High Energy Physics, 2021 We study the critical properties of the 3d O(2) universality class in bounded domains through Monte Carlo simulations of the clock model. We use an improved version of the latter, chosen to minimize finite-size corrections at criticality, with 8 ...
Alessandro Galvani +2 more
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Entanglement entropy and quantum field theory [PDF]
, 2004 We carry out a systematic study of entanglement entropy in relativistic quantum field theory. This is defined as the von Neumann entropy SA = −Tr ρAlogρA corresponding to the reduced density matrix ρA of a subsystem A.
P. Calabrese, J. Cardy
semanticscholar +1 more source
The flavor dependence of m ϱ /f π
Journal of High Energy Physics, 2019 We calculate the m ϱ /f π ratio in the chiral and continuum limit for SU(3) gauge theory coupled to N f = 2, 3, 4, 5, 6 fermions in the fundamental representation. Keeping all systematic effects under full control we find no statistically significant N f
Daniel Nogradi, Lorinc Szikszai
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Review of lattice studies of resonances [PDF]
, 2012 I review recent progress in extracting resonance parameters using lattice field theory, with an emphasis on determining hadron resonances from lattice quantum chromodynamics.
Mohler, Daniel
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Exotic $U(1)$ symmetries, duality, and fractons in 3+1-dimensional quantum field theory [PDF]
, 2020 We extend our exploration of nonstandard continuum quantum field theories in 2+1 dimensions to 3+1 dimensions. These theories exhibit exotic global symmetries, a peculiar spectrum of charged states, unusual gauge symmetries, and surprising dualities ...
N. Seiberg, Shu-Heng Shao
semanticscholar +1 more source
Real-time spin systems from lattice field theory
Journal of High Energy Physics, 2023 We construct a lattice field theory method for computing the real-time dynamics of spin systems in a thermal bath. This is done by building on previous work of Takano with Schwinger-Keldysh and functional differentiation techniques. We derive a Schwinger-
Neill C. Warrington
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CONNECTIONS of the LIOUVILLE MODEL and XXZ SPIN CHAIN [PDF]
, 1995 The quantum theory of the Liouville model with imaginary field is considered using the quantum inverse scattering method. An integrable structure with nontrivial spectral parameter dependence is developed for lattice Liouville theory by scaling the $L ...
Affleck +46 more
core +2 more sources
Quantum Cellular Automata from Lattice Field Theories [PDF]
, 2003 We apply the methods of lattice field theories to the quantization of cellular automata. We discuss the quantization of five main categories of cellular automata: bosonic, fermionic, supersymmetric, spin and quantum dot using path integral and operator formalisms of lattice field theories.
Michael McGuigan
openalex +3 more sources