Results 81 to 90 of about 5,915,931 (293)
Advanced Science, EarlyView.Multiferroic order parameters – polarization, magnetization, and ferroelastic strain – are positioned as dynamic design variables for batteries. Their mechanistic roles, practical tuning through fabrication and external fields, and ferroic‐resolved characterization routes are unified into a closed‐loop framework, revealing how coupled ferroic responses
Jiaqi Su +13 more
wiley +1 more source
Finite temperature fermionic condensate and energy–momentum tensor in cosmic string spacetime
European Physical Journal C: Particles and FieldsHere we analyze the expectation value of the fermionic condensate and the energy–momentum tensor associated with a massive charged fermionic quantum field with a nonzero chemical potential propagating in a magnetic-flux-carrying cosmic string in thermal ...
W. Oliveira dos Santos +1 more
doaj +1 more source
Physics Letters BWe investigate the essential properties of gravitational quantum field theory (GQFT) based on spin gauge symmetry, using the general theory of quantum electrodynamics as an example.
Yue-Liang Wu
doaj +1 more source
Noether's first theorem and the energy-momentum tensor ambiguity problem [PDF]
, 2021 Noether's theorems are widely praised as some of the most beautiful and useful results in physics. However, if one reads the majority of standard texts and literature on the application of Noether's first theorem to field theory, one immediately finds ...
Linnemann, Niels +2 more
core
On scalaron decay via the trace of energy-momentum tensor
Journal of High Energy Physics, 2019 In some inflation scenarios such as R 2 inflation, a gravitational scalar degrees of freedom called scalaron is identified as inflaton. Scalaron linearly couples to matter via the trace of energy-momentum tensor.
Ayuki Kamada
doaj +1 more source
European Physical Journal C: Particles and Fields, 2020 We present an explicit momentum space computation of the four-point function of the energy-momentum tensor in 4 spacetime dimensions for the free and conformally invariant theory of a scalar field.
Mirko Serino
doaj +1 more source
Space Time with Generalized Covariant Recurrent Energy Momentum Tensor
, 2016 [[abstract]]In this paper generalized covariant recurrent energy momentum ten- sor has been dened and it is shown that a general relativistic space- time with this type of tensor is generalized Ricci-recurrent and in a Ricci-recurrent Riemannian manifold
A. Bhattacharyya, T. De, D. Debnath
core
Advanced Science, EarlyView.A bio‐inspired bidirectional‐winding origami platform enables scalable and programmable deployable structures. Double axial folding inspired by earwig hindwings and Flasher‐based hybridization create modular multilayer architectures with diverse attainable winding angles under fixed boundary conditions.
Wenyao Zhang +5 more
wiley +1 more source
Trapping horizon and negative energy
Journal of High Energy Physics, 2019 Assuming spherical symmetry and the semi-classical Einstein equation, we prove that, for the observers on top of the trapping horizon, the vacuum energy-momentum tensor is always that of an ingoing negative energy flux at the speed of light with a ...
Pei-Ming Ho, Yoshinori Matsuo
doaj +1 more source
Review of Gastrointestinal Capsule Robots: Materials, Actuation, Diagnostics, and Therapeutics
Advanced Science, EarlyView.This review examines gastrointestinal capsule robots through a systems engineering lens, covering shell materials, actuation and localization strategies, diagnostic modalities, therapeutic interventions, and commercialization status. By mapping the complete technological chain from fabrication to clinical deployment, this work identifies critical gaps ...
Zengsheng Li +8 more
wiley +1 more source