Results 31 to 40 of about 71,366,600 (306)

Nonequilibrium Quantum Field Theory [PDF]

open access: yes, 2009
Bringing together the key ideas from nonequilibrium statistical mechanics and powerful methodology from quantum field theory, this 2008 book captures the essence of nonequilibrium quantum field theory.
Calzetta, Esteban A., Hu, Bei-Lok B.
core   +1 more source

Creating a joint secret key in reducing homomorphic encryption for a class of congruent systems

open access: yesБезопасность информационных технологий, 2021
Today special attention is paid to homomorphic encryption in the field of information security. Systems of homomorphic encryption represent such systems that allow arbitrary operations over ciphertext that are homomorphic to algebraic operations with ...
Victor Y. Kadykov, Alla B. Levina
doaj   +1 more source

fcc lattice, checkerboards, fractons, and quantum field theory [PDF]

open access: yesPhysical Review B, 2021
We consider XY-spin degrees of freedom on an fcc lattice, such that the system respects some subsystem global symmetry. We then gauge this global symmetry and study the corresponding $U(1)$ gauge theory on the fcc lattice. Surprisingly, this $U(1)$ gauge theory is dual to the original spin system.
Pranay Gorantla   +3 more
openaire   +1 more source

Advances in Quantum Field Theory [PDF]

open access: yes, 2012
Quantum Field Theory is now well recognized as a powerful tool not only in Particle Physics but also in Nuclear Physics, Condensed Matter Physics, Solid State Physics and even in Mathematics. In this book some current applications of Quantum Field Theory

core   +1 more source

Noncoplanar magnetic orders and gapless chiral spin liquid on the kagome lattice with staggered scalar spin chirality

open access: yesSciPost Physics, 2022
Chiral three-spin interactions can suppress long-range magnetic order and stabilize quantum spin liquid states in frustrated lattices. We study a spin-1/2 model on the kagome lattice involving a staggered three-spin interaction $J_\chi$ in addition to
Fabrizio Oliviero, João Augusto Sobral, Eric C. Andrade, Rodrigo G. Pereira
doaj   +1 more source

A New Computational Approach to Lattice Quantum Field Theories [PDF]

open access: yesProceedings of The XXVI International Symposium on Lattice Field Theory — PoS(LATTICE 2008), 2009
15 pages, 6 figures; Plenary talk presented at the XXVI International Symposium on Lattice Field Theory, July 14 - 19, 2008, Williamsburg, Virginia ...
openaire   +2 more sources

Fractional Quantum Field Theory: From Lattice to Continuum [PDF]

open access: yesAdvances in High Energy Physics, 2014
An approach to formulate fractional field theories on unbounded lattice space-time is suggested. A fractional-order analog of the lattice quantum field theories is considered. Lattice analogs of the fractional-order 4-dimensional differential operators are proposed.
openaire   +2 more sources

Remarks on the quantum field theory in lattice space. II [PDF]

open access: yesCommunications in Mathematical Physics, 1968
We calculate the Gelfand functionsE(f,g;a) for quantized field φ in lattice space,a being the lattice constant. In the limita → 0 the functionals take on two different forms depending upon the “potential”F[φ] of the lattice Hamiltonian (coupling between different lattice sites not included). IfF[φ] is of a short-range type (see text for definition) the
openaire   +4 more sources

Parent Hamiltonians for lattice Halperin states from free-boson conformal field theories

open access: yesNuclear Physics B, 2017
We introduce a family of many-body quantum states that describe interacting spin one-half hard-core particles with bosonic or fermionic statistics on arbitrary one- and two-dimensional lattices.
Anna Hackenbroich, Hong-Hao Tu
doaj   +1 more source

Casimir Puzzle and Casimir Conundrum: Discovery and Search for Resolution

open access: yesUniverse, 2021
This paper provides a review of the complicated problems in Lifshitz theory describing the Casimir force between real material plates composed of metals and dielectrics, including different approaches to their resolution.
Vladimir M. Mostepanenko
doaj   +1 more source

Home - About - Disclaimer - Privacy