Systematic treatment of displacements, strains, and electric fields in density-functional perturbation theory [PDF]
, 2005 The methods of density-functional perturbation theory may be used to calculate various physical response properties of insulating crystals including elastic, dielectric, Born charge, and piezoelectric tensors.
Xifan Wu +7 more
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Geophysical Monograph Series, Page 263-304., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Jessica H. Whiteside +3 more
wiley +3 more sources
Radiative and chiral corrections to elastic lepton-proton scattering in chiral perturbation theory [PDF]
Physical Review D, 2020 Pulak Talukdar, 2, ∗ Vanamali C. Shastry, 4, † Udit Raha, ‡ and Fred Myhrer § Department of Physics, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India. Department of Physics, S. B. Deorah College, Guwahati, Assam 781007.
P. Talukdar +3 more
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Perturbing the Stable Accretion Disk in Kerr and 4D Einstein–Gauss–Bonnet Gravities: Comprehensive Analysis of Instabilities and Dynamics [PDF]
Research in Astronomy and Astrophysics, 2023 The study of a disturbed accretion disk holds great significance in the realm of astrophysics, as such events play a crucial role in revealing the nature of disk structure, the release of energy, and the generation of shock waves.
Orhan Donmez
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Dynamics of dark energy in collapsing halo of dark matter [PDF]
, 2015 We investigate the non-linear evolution of spherical density and velocity perturbations of dark matter and dark energy in the expanding Universe. For that we have used the conservation and Einstein equations to describe the evolution of gravitationally ...
Novosyadlyj, B., Tsizh, M.
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JWST's PEARLS: Mothra, a new kaiju star at z=2.091 extremely magnified by MACS0416, and implications for dark matter models [PDF]
Astronomy & Astrophysics, 2023 We report the discovery of Mothra, an extremely magnified monster star, likely a binary system of two supergiant stars, in one of the strongly lensed galaxies behind the galaxy cluster MACS0416.
J. Diego +31 more
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Quasi-radial modes of pulsating neutron stars: numerical results for general-relativistic rigidly rotating polytropic models [PDF]
, 2014 In this paper we compute general-relativistic polytropic models simulating rigidly rotating, pulsating neutron stars. These relativistic compact objects, with a radius of $\sim 10 \, \mathrm{km}$ and mass between $\sim 1.4$ and $3.2$ solar masses, are ...
Geroyannis, Vassilis +1 more
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General relativistic hydrodynamic simulations of perturbed transonic accretion [PDF]
Astronomy & Astrophysics, 2023 Comparison of horizon-scale observations of Sgr A* and M87* with numerical simulations has provided considerable insight in their interpretation. Most of these simulations are variations of the same physical scenario consisting of a rotation-supported ...
Hector R. Olivares S. +2 more
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Short-axis-mode rotation of a free rigid body by perturbation series [PDF]
, 2013 A simple rearrangement of the torque free motion Hamiltonian shapes it as a perturbation problem for bodies rotating close to the principal axis of maximum inertia, independently of their triaxiality.
Lara, Martin
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Primordial black holes generated by the non-minimal spectator field [PDF]
Science China Physics Mechanics and Astronomy, 2022 We improve and generalize the non-minimal curvaton model originally proposed in arXiv: 2112.12680 to a model in which a spectator field non-minimally couples to an inflaton field and the power spectrum of the perturbation of spectator field at small ...
De-Shuang Meng, Chengchao Yuan, Q. Huang
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