Results 71 to 80 of about 5,629 (298)

Relativity and irreversibility

open access: yesDiscrete Dynamics in Nature and Society, 2004
The Lorentz transformation is extended to the decaying states in a relativistic model of interacting fields. The nonlocal action is defined beyond the Hilbert space.
I. Antoniou   +3 more
doaj   +1 more source

Two-step Lorentz transformation of force

open access: yes, 2010
Lorentz transformation of force is derived in a more natural way using two boost transformations and corresponding Thomas-Wigner rotation.
Ilakovac, Amon, Popov, Luka
core  

Helical Electron Beam Micro‐Bunching by High‐Order Modes in a Micro‐Plasma Waveguide

open access: yesAdvanced Science, EarlyView.
ABSTRACT Electron acceleration by a high‐power Laguerre‐Gaussian pulse in a micro‐plasma waveguide is investigated. When the incident laser travels in the waveguide, electrons on the wall are extracted into the vacuum core and accelerated by the longitudinal field of the waveguide mode.
Xingju Guo, Longqing Yi
wiley   +1 more source

Regularization of f(T) Gravity Theories and Local Lorentz Transformation

open access: yesAdvances in High Energy Physics, 2015
We regularized the field equations of f(T) gravity theories such that the effect of local Lorentz transformation (LLT), in the case of spherical symmetry, is removed.
Gamal G. L. Nashed
doaj   +1 more source

Lorentz transformation from an elementary point of view

open access: yes, 2016
Elementary methods are used to examine some nontrivial mathematical issues underpinning the Lorentz transformation. Its eigen-system is characterized through the exponential of a $G$-skew symmetric matrix, underlining its unconnectedness at one of its ...
Jadczyk, Arkadiusz, Szulga, Jerzy
core   +1 more source

A Flexible Metamaterial Absorber via Loss Engineering for Large‐Area Ultra‐Broadband Infrared Extinction

open access: yesAdvanced Science, EarlyView.
Designed and demonstrated a flexible metamaterial absorber via loss engineering for large‐area ultra‐broadband infrared extinction, providing a new method for miniaturization of absorbers and flexible optical devices. ABSTRACT The advancement of compact and wearable optical systems is critically limited by the lack of high‐performance, integrable ...
Zhe Wu   +11 more
wiley   +1 more source

Calculation of the same Lorentz factor using the opposite approach

open access: yesAIP Advances
This article extends the law of electromagnetic oscillation to form a theoretical system of spatial particles. According to this theory, the speed of light is variable and motion is absolute.
Wu Wang
doaj   +1 more source

Wigner–Souriau translations and Lorentz symmetry of chiral fermions

open access: yesPhysics Letters B, 2015
Chiral fermions can be embedded into Souriau's massless spinning particle model by “enslaving” the spin, viewed as a gauge constraint. The latter is not invariant under Lorentz boosts; spin enslavement can be restored, however, by a Wigner–Souriau (WS ...
C. Duval   +3 more
doaj   +1 more source

MAXWELL EQUATION AND LORENTZ TRANSFORMATION INACURVED SPACE FOR FIELDS AND FREE SPACE ON THE BASIS OF MAXWELL'S EQUATIONS

open access: yes, 2018
<p>Using the expression of Lorentz force of the electron a useful expression for Lorentz transformation of the special relativity theory was found.
Mubarak Dirar Abdallah*1, Nuha Abdelrahman Khalid2, Zoalnoon Ahmed Abeid Allah3 & Sawsan Ahmed Elhouri Ahmed4
core   +1 more source

Coupled Vacancy and Phonon‐Scattering Engineering Drive Defect Evolution Toward Multifunctional High‐Performance Bi2Te3 Thermoelectrics

open access: yesAdvanced Science, EarlyView.
ZnSb reduces carrier concentration and suppresses Te volatilization, while Se substitution within QLs softens phonons and enhances anharmonicity. Swapped bilayers near twin boundaries strengthen phonon scattering and interlayer bonding. As a result, the optimal sample achieves an ultra‐high zT ∼1.51, cooling temperature difference of ∼70 K, power ...
Ruiheng Li   +12 more
wiley   +1 more source

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