A Note on Equivalence Among Various Scalar Field Models of Dark Energies
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Theoretical Physics"
DOI: 10.1007/s10773-017-3392-9
Abstract: In this work, we have tried to find out similarities between various available models of scalar field dark energies (e.g., quintessence, k-essence, tachyon, phantom, quintom, dilatonic dark energy, etc). We have defined an equivalence relation… read more here.
Keywords: field models; equivalence; models dark; scalar field ... See more keywords
Estimation of Local Microcanonical Averages in Two Lattice Mean-Field Models Using Coupling Techniques
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Statistical Physics"
DOI: 10.1007/s10955-020-02612-1
Abstract: We consider an application of probabilistic coupling techniques which provides explicit estimates for comparison of local expectation values between label permutation invariant states, for instance, between certain microcanonical, canonical, and grand canonical ensemble expectations. A… read more here.
Keywords: local microcanonical; field models; field; mean field ... See more keywords
A Comparative Review of XFEM, Mixed FEM and Phase-Field Models for Quasi-brittle Cracking
Sign Up to like & getrecommendations! Published in 2021 at "Archives of Computational Methods in Engineering"
DOI: 10.1007/s11831-021-09604-8
Abstract: In this work, a critical comparison between three different numerical approaches for the computational modelling of quasi-brittle structural failure is presented. Among the many finite element approaches devised to solve the problem, both using continuous… read more here.
Keywords: xfem mixed; field models; phase field; quasi brittle ... See more keywords
Scalar field models driven by Dirac-Born-Infeld dynamics and their relatives
Sign Up to like & getrecommendations! Published in 2022 at "Annals of Physics"
DOI: 10.1016/j.aop.2022.168780
Abstract: In this paper, we investigate novel kinklike structures in a scalar field theory driven by DiracBorn-Infeld (DBI) dynamics. Analytical features are reached through a first-order formalism and a deformation procedure. The analysis ensures the linear… read more here.
Keywords: infeld; field; models driven; field models ... See more keywords
Splitting schemes for phase-field models
Sign Up to like & getrecommendations! Published in 2020 at "Applied Numerical Mathematics"
DOI: 10.1016/j.apnum.2020.04.017
Abstract: Abstract In this paper, we consider several splitting schemes for unsteady problems for the most common phase-field models. The fully implicit discretization of such problems would yield at each time step a nonlinear problem that… read more here.
Keywords: order; field models; splitting schemes; phase field ... See more keywords
An energy-stable time-integrator for phase-field models
Sign Up to like & getrecommendations! Published in 2017 at "Computer Methods in Applied Mechanics and Engineering"
DOI: 10.1016/j.cma.2016.12.017
Abstract: We introduce a provably energy-stable time-integration method for general classes of phase-field models with polynomial potentials. We demonstrate how Taylor series expansions of the nonlinear terms present in the partial differential equations of these models… read more here.
Keywords: field models; stable time; energy; phase field ... See more keywords
Dynamics of delayed neural field models in two-dimensional spatial domains
Sign Up to like & getrecommendations! Published in 2022 at "Journal of Differential Equations"
DOI: 10.1016/j.jde.2022.02.002
Abstract: Delayed neural field models can be viewed as a dynamical system in an appropriate functional analytic setting. On two dimensional rectangular space domains, and for a special class of connectivity and delay functions, we describe… read more here.
Keywords: neural field; field models; equation; delayed neural ... See more keywords
Surface tension calculations of the cationic (CTAB) and the zwitterionic (SB3-12) surfactants using new force field models: a computational study
Sign Up to like & getrecommendations! Published in 2019 at "Molecular Physics"
DOI: 10.1080/00268976.2019.1656349
Abstract: Actual CTAB and SB3-12 surfactant force field models fail to reproduce one of the most important thermodynamic property of those molecules, the surface tension. Molecular dynamics simulations were conducted to construct new force fields of… read more here.
Keywords: field models; force field; ctab; new force ... See more keywords
Triple junction benchmark for multiphase-field models combining capillary and bulk driving forces
Sign Up to like & getrecommendations! Published in 2024 at "Modelling and Simulation in Materials Science and Engineering"
DOI: 10.1088/1361-651x/ad8d6f
Abstract: A benchmark problem is formulated which is well suited for the validation of mesoscopic phase-field models for grain-boundary migration in polycrystals. First, an analytical steady-state solution of the sharp moving boundary problem is derived for… read more here.
Keywords: driving forces; field; field models; bulk driving ... See more keywords
Canonical equilibrium of mean-field O(n) models in the presence of random fields.
Sign Up to like & getrecommendations! Published in 2025 at "Physical review. E"
DOI: 10.1103/nhkq-sb63
Abstract: We study canonical-equilibrium properties of random field O(n) models involving classical continuous vector spins of n components with mean-field interactions and subject to disordered fields acting on individual spins. To this end, we employ two… read more here.
Keywords: canonical equilibrium; field; distribution; field models ... See more keywords
Small field models of inflation that predict a tensor-to-scalar ratio r=0.03
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review D"
DOI: 10.1103/physrevd.100.043522
Abstract: Future observations of the cosmic microwave background (CMB) polarization are expected to set an improved upper bound on the tensor-to-scalar ratio of $r\lesssim 0.03$. Recently, we showed that small field models of inflation can produce… read more here.
Keywords: field; scalar ratio; models inflation; field models ... See more keywords