Results 51 to 60 of about 765,577 (221)
Two loop stress-energy tensor for inflationary scalar electrodynamics
, 2008 We calculate the expectation value of the coincident product of two field strength tensors at two loop order in scalar electrodynamics on de Sitter background. The result agrees with the stochastic formulation which we have developed in a companion paper
A. A. Starobinsky +8 more
core +1 more source
Rational nonlinear electrodynamics causes the inflation of the universe [PDF]
Int.J.Mod.Phys.A 35 (2020) 26, 2050168, 2020 The source of the universe inflation is electromagnetic fields obeying rational nonlinear electrodynamics proposed earlier. Within this model the singularities of the electric field at the center of charges, the Ricci scalar, the Ricci tensor squared and the Kretschmann scalar are absent.
arxiv +1 more source
Vacuum fluctuations and the conditional homodyne detection of squeezed light
, 2004 Conditional homodyne detection of quadrature squeezing is compared with standard nonconditional detection. Whereas the latter identifies nonclassicality in a quantitative way, as a reduction of the noise power below the shot noise level, conditional ...
Bowen W P +20 more
core +1 more source
Path Integral Spin Dynamics for Quantum Paramagnets
Advanced Physics Research, EarlyView.The study has developed a path integral method, which is a classical approach, combined with atomistic spin dynamics simulations to calculate thermal quantum expectation values. This method can handle Hamiltonians with non‐linear terms, which are important for describing uniaxial anisotropies and mechanical constraints.
Thomas Nussle +2 more
wiley +1 more source
International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT A critical distance parameter is introduced to describe the stress gradient effect of notched metallic structures under random vibration loadings, which is the frequency domain expression of the theory of critical distance (TCD) based line method stress.
Daiyang Gao, Yuming Huang, Wenhe Liao
wiley +1 more source
Classical Phase Space Density for the Relativistic Hydrogen Atom
, 2005 Quantum mechanics is considered to arise from an underlying classical structure (``hidden variable theory'', ``sub-quantum mechanics''), where quantum fluctuations follow from a physical noise mechanism.
Nieuwenhuizen, Th. M.
core +2 more sources
Kombucha–Chlorella–Proteinoid Biosynthetic Classifiers of Audio Signals
Nano Select, Volume 6, Issue 2, February 2025.Novel bioelectronic composites, which consist of kombucha, chlorella, and proteinoids, exhibit exceptional audio classification capacities. This living material analyzes electrical waveforms obtained from sound sources, identifying complex audio inputs such as the English alphabet.
Panagiotis Mougkogiannis +2 more
wiley +1 more source
Cavity Quantum Electrodynamics of Continuously Monitored Bose-Condensed Atoms
Atoms, 2015 We study cavity quantum electrodynamics of Bose-condensed atoms that are subjected to continuous monitoring of the light leaking out of the cavity. Due to a given detection record of each stochastic realization, individual runs spontaneously break the ...
Mark D. Lee, Janne Ruostekoski
doaj +1 more source
Novel aspects of radiation reaction in the classical and the quantum regime
, 2014 This work is dedicated to the study of radiation reaction signatures in the framework of classical and quantum electrodynamics. Since there has been no distinct experimental validation of radiation reaction and its underlying equations so far and its ...
Di Piazza, Antonino +5 more
core +1 more source
Modeling Toroidal Currents in the Ionospheric Electrojet Regions
Journal of Geophysical Research: Space Physics, Volume 130, Issue 1, January 2025.Abstract New basis functions, suitable for fitting magnetic field observations of the auroral and equatorial electrojets, are constructed by applying principal components analysis (PCA) to a set of rotated current loops in the ionospheric E‐layer.
P. Alken, G. D. Egbert
wiley +1 more source