Results 61 to 70 of about 36,896 (288)
, 2009 We consider wave packets of free particles with a general energy-momentum dispersion relation $E(p)$. The spreading of the wave packet is determined by the velocity $v = \p_p E$. The position-velocity uncertainty relation $\Delta x \Delta v \geq {1/2} ||$
Almeida +31 more
core +2 more sources
Harnessing Fungal Biowelding for Constructing Mycelium‐Engineered Materials
Advanced Engineering Materials, EarlyView.Mycelium‐bound composites (MBCs) offer low‐carbon alternatives for construction, yet interfacial bonding remains a critical challenge. This review examines fungal biowelding as a biocompatible adhesive, elucidating mycelium‐mediated interfacial mechanisms and their role in material assembly. Strategies to optimize biowelding are discussed, highlighting
Xue Brenda Bai +2 more
wiley +1 more source
Real-time scattering of interacting quasiparticles in quantum spin chains
Physical Review Research, 2021 We develop a method based on tensor networks to create localized single-particle excitations on top of strongly correlated quantum spin chains. In analogy to the problem of creating localized Wannier modes, this is achieved by optimizing the gauge ...
Maarten Van Damme +4 more
doaj +1 more source
Nonlinear dynamics of wave packets in PT-symmetric optical lattices near the phase transition point
, 2012 Nonlinear dynamics of wave packets in PT-symmetric optical lattices near the phase-transition point are analytically studied. A nonlinear Klein-Gordon equation is derived for the envelope of these wave packets. A variety of novel phenomena known to exist
Bender +14 more
core +1 more source
Canonical wave packets in quantum cosmology [PDF]
, 2007 We discuss the construction of wave packets resulting from the solutions of a class of Wheeler-DeWitt equations in Robertson-Walker type cosmologies, for arbitrary curvature.
Boyd J P +11 more
core +2 more sources
Wave-Packet Evolution and Quantization [PDF]
Physical Review Letters, 1986 A general relationship is established between wave-packet evolution and quantization in classically integrable systems. Because of wave-packet spreading, one cannot simply take the Fourier transform of the time evolution of a wave-packet. Instead, one must propagate the wave-packet using the actions as Hamiltonians.
openaire +3 more sources
A Compact Spin‐Coated Graphene UWB Antenna for Breast Tumor Detection
Advanced Engineering Materials, EarlyView.A compact, spin‐coated graphene ultra‐wideband patch antenna designed for breast tumor detection, capable of distinguishing between malignant and benign tumors. This innovative antenna can serve as an effective initial screening tool, particularly in resource‐limited settings such as rural areas, where access to advanced medical equipment like MRI and ...
Raja Rashidul Hasan +9 more
wiley +1 more source
High-Energy Wave Packets. ‘Half-Bare’ Electron
East European Journal of Physics, 2013 The evolution in space and time of localized high-energy electromagnetic wave packets, which take place in processes of radiation by ultra relativistic electrons is considered.
Nikolai Shul’ga, Sergii Trofymenko
doaj
Maxwell wave packets in de Sitter expanding universe
European Physical Journal C: Particles and Fields, 2021 We study for the first time the propagation of the packets of plane waves of the Maxwell free field in the de Sitter expanding universe as detected by an observer staying at rest in his proper frame with physical de Sitter–Painlevé coordinates.
Ion I. Cotăescu, Ion Cotăescu
doaj +1 more source
Geometrical properties of intelligent spin states and time evolution of coherent states
, 1999 We remind the properties of the intelligent (and quasi-intelligent) spin states introduced by Aragone et al. We use these states to construct families of coherent wave packets on the sphere and we sketch the time evolution of these wave packets for a ...
Arvieu, R., Rozmej, P.
core +3 more sources