Results 41 to 50 of about 3,941,965 (334)

Superfluid-Insulator transition of ultracold atoms in an optical lattice in the presence of a synthetic magnetic field [PDF]

open access: yes, 2010
We study the Mott insulator-superfluid transition of ultracold bosonic atoms in a two-dimensional square optical lattice in the presence of a synthetic magnetic field with p/q (p and q being co-prime integers) flux quanta passing through each lattice ...
Jaksch D.   +7 more
core   +2 more sources

Refined algebraic quantisation with the triangular subgroup of SL(2,R)

open access: yes, 2004
We investigate refined algebraic quantisation with group averaging in a constrained Hamiltonian system whose gauge group is the connected component of the lower triangular subgroup of SL(2,R). The unreduced phase space is T^*R^{p+q} with p>0 and q>0, and
ALBERTO MOLGADO   +19 more
core   +4 more sources

Multiple Positive Solutions for a Class of Boundary Value Problem of Fractional p,q-Difference Equations under p,q-Integral Boundary Conditions

open access: yesJournal of Mathematics, 2021
This paper is mainly concerned with a class of fractional p,q-difference equations under p,q-integral boundary conditions. Multiple positive solutions are established by using the topological degree theory and Krein–Rutman theorem.
Yongyang Liu, Yansheng Liu
doaj   +1 more source

Branes, Rings and Matrix Models in Minimal (Super)string Theory

open access: yes, 2003
We study both bosonic and supersymmetric (p,q) minimal models coupled to Liouville theory using the ground ring and the various branes of the theory. From the FZZT brane partition function, there emerges a unified, geometric description of all these ...
A.B. Zamolodchikov   +35 more
core   +3 more sources

R(p,q)- analogs of discrete distributions: general formalism and application [PDF]

open access: yes, 2019
In this paper, we define and discuss $\mathcal{R}(p,q)$- deformations of basic univariate discrete distributions of the probability theory. We mainly focus on binomial, Euler, P\'olya and inverse P\'olya distributions.
Hounkonnou, Mahouton Norbert   +1 more
core   +3 more sources

Coleman–Weinberg potential in p-adic field theory

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
In this paper, we study $$\lambda \phi ^4$$ λ ϕ 4 scalar field theory defined on the unramified extension of p-adic numbers $${\mathbb {Q}}_{p^n}$$ Q p n .
Dmitry S. Ageev   +2 more
doaj   +1 more source

Least energy sign-changing solutions for a class of fractional $ (p, q) $-Laplacian problems with critical growth in $ \mathbb{R}^N $

open access: yesAIMS Mathematics, 2023
This paper considers the following fractional $ (p, q) $-Laplacian equation: $ (-\Delta)_{p}^{s} u+(-\Delta)_{q}^{s} u+V(x)\left(|u|^{p-2} u+|u|^{q-2} u\right) = \lambda f(u)+|u|^{q^*_s-2}u \quad \text { in } \mathbb{R}^{N}, $ where $ s \in(0 ...
Kun Cheng   +3 more
doaj   +1 more source

Three-dimensional teleparallel Chern-Simons supergravity theory

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
In this work we present a gauge-invariant three-dimensional teleparallel supergravity theory using the Chern-Simons formalism. The present construction is based on a supersymmetric extension of a particular deformation of the Poincaré algebra.
Ricardo Caroca   +3 more
doaj   +1 more source

A Combinatorial Model for $q$-Generalized Stirling and Bell Numbers [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2008
We describe a combinatorial model for the $q$-analogs of the generalized Stirling numbers in terms of bugs and colonies. Using both algebraic and combinatorial methods, we derive explicit formulas, recursions and generating functions for these $q ...
Miguel Méndez, Adolfo Rodríguez
doaj   +1 more source

The p-q theory for active filter control: some problems and solutions [PDF]

open access: yesSba: Controle & Automação Sociedade Brasileira de Automatica, 2004
The instantaneous active and reactive power theory or the p-q Theory is widely used to design controllers for active filters. This paper deals with some problems due to the misinterpretations of this theory. A historical background of the theory is presented and the problem caused by distorted voltages at the point of common connection (PCC) is ...
Watanabe, Edson H.   +2 more
openaire   +3 more sources

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