Results 1 to 10 of about 8,586,817 (317)
General foundation for the nonlinear ponderomotive four-force in laser-plasma interactions
Laser and Particle Beams, 2006 The interaction of electromagnetic radiation with plasmas is studied in relativistic four-vector formalism. A gauge and Lorentz invariant ponderomotive four-force is derived from the time dependent nonlinear three-force of Hora (1985). This four-force, due to its Lorentz invariance, contains new magnetic field terms.
T. Rowlands
openaire +4 more sources
MACE: Higher Order Equivariant Message Passing Neural Networks for Fast and Accurate Force Fields [PDF]
Neural Information Processing Systems, 2022 Creating fast and accurate force fields is a long-standing challenge in computational chemistry and materials science. Recently, several equivariant message passing neural networks (MPNNs) have been shown to outperform models built using other approaches
Ilyes Batatia +4 more
semanticscholar +1 more source
Acoustic Radiation Force: A Review of Four Mechanisms for Biomedical Applications
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2021 Radiation force is a universal phenomenon in any wave motion where the wave energy produces a static or transient force on the propagation medium. The theory of acoustic radiation force (ARF) dates back to the early 19th century.
A. Sarvazyan, O. Rudenko, M. Fatemi
semanticscholar +1 more source
Epilepsia, 2022 In 2017, the International League Against Epilepsy (ILAE) Classification of Epilepsies described the “genetic generalized epilepsies” (GGEs), which contained the “idiopathic generalized epilepsies” (IGEs).
E. Hirsch +21 more
semanticscholar +1 more source
Beyond Four Forces: The Evolution of Psychotherapy [PDF]
Sage Open, 2019 One framework for studying the evolution or development of personality theory and psychotherapy is the concept of forces—theoretical models, paradigms, dimensions, movements, or worldviews—that have made significant contributions to and shaped the field.
Colette Fleuridas, Drew Krafcik
openaire +3 more sources
Unification of the four forces in the Spin(11,1) geometric algebra
Physica Scripta, 2023 Abstract SO(10), or equivalently its covering group Spin(10), is a well-known promising grand unified group that contains the standard-model group. The spinors of the group Spin(N) of rotations in N spacetime dimensions are indexed by a bitcode with [N/2] bits. Fermions in Spin(10) are described by five bits yzrgb, consisting of two weak
Andrew J S Hamilton, Tyler McMaken
openaire +2 more sources
Self-force approach to synchrotron radiation [PDF]
, 2000 We analyze radiation reaction for synchrotron radiation by computing, via a multipole expansion, the near field and derive from it the Lorentz four-force, which we evaluate on the world-line of the charge.
Burko, Lior M.
core +2 more sources
Inflation in a self-interacting gas universe [PDF]
, 1998 We show that a de Sitter spacetime is a solution of Einstein's field equations with the energy momentum tensor of a self-interacting, classical Maxwell-Boltzmann gas in collisional equilibrium.
Balakin, Alexander B., Zimdahl, Winfried
core +2 more sources
Linear Atomic Cluster Expansion Force Fields for Organic Molecules: Beyond RMSE
Journal of Chemical Theory and Computation, 2021 We demonstrate that fast and accurate linear force fields can be built for molecules using the atomic cluster expansion (ACE) framework. The ACE models parametrize the potential energy surface in terms of body-ordered symmetric polynomials making the ...
D. P. Kovács +6 more
semanticscholar +1 more source
Covariant Uniform Acceleration [PDF]
, 2013 We show that standard Relativistic Dynamics Equation F=dp/d\tau is only partially covariant. To achieve full Lorentz covariance, we replace the four-force F by a rank 2 antisymmetric tensor acting on the four-velocity.
Barut A +20 more
core +1 more source