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Berry connection polarizability tensor and third-order Hall effect
Published 2022“…Here, we show that the Berry connection polarizability (BCP) tensor, as another intrinsic band geometric quantity, plays a key role in the third-order Hall effect. …”
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One-loop corrections to the primordial tensor spectrum from massless isocurvature fields
Published 2020“…We study one-loop corrections to the two-point correlation function of tensor perturbations in primordial cosmology induced by massless spectator matter fields. …”
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Third-order nonlinear Hall effect induced by the Berry-connection polarizability tensor
Published 2022“…Theory predicts that another intrinsic band geometric property, the Berry-connection polarizability tensor10, gives rise to higher-order signals, but it has not been probed experimentally. …”
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Sparse tensor product high dimensional finite elements for two-scale mixed problems
Published 2022“…We develop the essentially optimal sparse tensor product finite element method for solving two-scale mixed problems in both the primal and dual forms. …”
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Sparse tensor Galerkin discretization of parametric and random parabolic PDEs - analytic regularity and generalized polynomial chaos approximation
Published 2014“…The present results imply convergence rates and stability of sparse, adaptive space-time tensor product Galerkin discretizations of these infinite dimensional, parametric problems in the parameter space recently proposed in [C. …”
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High dimensional finite elements for multiscale wave equations
Published 2015“…With sufficient regularity, the sparse tensor product approximation achieves a convergence rate essentially equal to that for the full tensor product approximation, but requires only an essentially equal number of degrees of freedom as for solving an equation in $\mathbb{R}^d$ for the same level of accuracy. …”
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General relativistic Lagrangian continuum theories part I: reduced variational principles and junction conditions for hydrodynamics and elasticity
Published 2024“…For the latter case, our setting also allows to clarify the relation between formulations of relativistic elasticity based on the relativistic right Cauchy-Green tensor or on the relativistic Cauchy deformation tensor. …”
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High dimensional finite elements for two-scale Maxwell wave equations
Published 2022“…This problem depends on two variables in Rd, one for each scale that the original two-scale equation depends on, and is thus posed in a high dimensional tensorized domain. The straightforward full tensor product finite element (FE) method is exceedingly expensive. …”
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The QCD mass gap and quark deconfinement scales as mass bounds in strong gravity
Published 2019“…It may therefore be used to explore the stability and confinement of gauge singlet hadrons, though not to describe scattering processes that require color interactions. It is a two-tensor theory of both strong interactions and gravity, in which the strong tensor field is governed by equations formally identical to the Einstein equations, apart from the coupling parameter, which is of order 1 GeV−1 . …”
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Anisotropic centroidal voronoi tessellations and their applications
Published 2009“…In this paper, we introduce a novel definition of the anisotropic centroidal Voronoi tessellation (ACVT) corresponding to a given Riemann metric tensor. A directional distance function is used in the definition to simplify the computation. …”
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Dynamics of binary mixtures in inhomogeneous temperature
Published 2015“…Then an expression for the pressure tensor is derived. As examples of applications, interface behavior and phase separation have been numerically studied in two dimensions neglecting the contributions of the velocity field. …”
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Approximations by orthonormal mapped Chebyshev functions for higher-dimensional problems in unbounded domains
Published 2014“…The approximation results for both the usual tensor product space and hyperbolic cross space are established, with the latter particularly suitable for higher-dimensional problems.…”
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Regularity and generalized polynomial chaos approximation of parametric and random second-order hyperbolic partial differential equations
Published 2013“…The results allow obtaining convergence rates and stability of sparse space-time tensor product Galerkin discretizations in the parameter space.…”
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Noncommutative spacetime geometry and one-loop effects in primordial cosmology
Published 2019“…After deforming the algebra of functions on the inflationary background to a spatially noncommutative one, we find that this induces momentum-dependent corrections to one-loop terms which imply that the vacuum fluctuations of the energy-momentum tensor source that of the curvature fluctuation even for distances beyond horizon scales. …”
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High dimensional finite element method for multiscale nonlinear monotone parabolic equations
Published 2020“…However, it is posed in a high dimensional tensorized domain. We develop the sparse tensor product FE method for this equation that uses an essentially optimal number of degrees of freedom to obtain an approximation for the solution within a prescribed accuracy. …”
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Hybrid surface waves in two-dimensional Rashba-Dresselhaus materials
Published 2017“…It is demonstrated that off-diagonal components of the conductivity tensor resulting from a delicate interplay between Rashba and Dresselhaus couplings lead to the hybridization of transverse electric and transverse magnetic surface electromagnetic modes localized at the interface. …”
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Entanglement of random hypergraph states
Published 2023“…In particular, we study the two ensembles generated by random Controlled-Z(CZ) and Controlled-Controlled-Z(CCZ) gates, respectively. By applying tensor network representation and combinational counting, we analytically show that the average subsystem purity and entanglement entropy for the two ensembles feature the same volume law, but greatly differ in typicality, namely the purity fluctuation is small and universal for the CCZ ensemble while it is large for the CZ ensemble. …”
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High-dimensional finite elements for multiscale Maxwell-type equations
Published 2017“…Solving it, we get all the necessary macroscopic and microscopic information. Sparse tensor product finite elements (FEs) are employed, using edge FEs. …”
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Bayesian inverse problems for recovering coefficients of two scale elliptic equations
Published 2021“…Although this equation is posed in a high dimensional tensorized domain, it can be solved with essentially optimal complexity by the sparse tensor product finite element method, which reduces the computational complexity of the MCMC sampling method substantially. …”
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