We’re often told it is “unscientific” or “meaningless” to ask what happened before the Big Bang. But a new paper by FQxI cosmologist Eugene Lim, of King’s College London, UK, and astrophysicists Katy Clough, of Queen Mary University of London,…
Category: 4. Physics
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Scientists Crack the Code of China’s Mysterious “Matrix Tide”
A University at Buffalo study describes two-dimensional wave patterns, including undular bores, that propagate in two directions. Last year, spectators along China’s Qiantang River witnessed an unusual sight: waves arranging themselves into a…
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Defective states of Hermite-Gaussian modes for long-distance image transmission and high-capacity encoding
Concepts and principle
The eigenmodes of lasers are solutions to the Helmholtz equation under the paraxial approximation, which means that their intensity distribution remains invariant during propagation, with only a scaling effect due to beam…
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Comparative analysis of ALA mediated sonodynamic therapy considering tumor size, light combination and ultrasound delivery in murine cutaneous melanoma
World Cancer Research Fund International. Skin cancer statistics (2022). Online (2024).
American Cancer Society. Key statistics for melanoma skin cancer. Online (2024).
Society of Immunotherapy of Cancer. Staging melanoma. Online (2024).
AIM at…
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Anisotropic temperature-dependent lattice parameters and elastic constants from first principles
The free energy
Consider the crystallographic parameters, including lattice constants, cell angles, and internal atomic positions, represented by Cγ, with γ ranging from 1 to NC. In a scenario where symmetries are ignored, NC is given by 6 +…
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Collaborative design of polarization and antiferrodistortion configurations in high energy capacitive relaxor ferroelectrics
Modulation of polarization and antiferrodistortion configurations
For the identification of the local polar structure of the designed NN-based RFEs, the detailed polar structures of both samples were carried out by transmission electron…
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Identification of a magnetohydrodynamic trigger for plasma explosions in magnetic fusion beyond existing paradigms
The Japan Atomic Energy Research Institute Tokamak-60 Upgrade (JT-60U)28 is a single-null-divertor tokamak device with major and minor plasma radii of 3–3.5 m and 0.6–1.1 m, respectively. The maximum toroidal magnetic field, ≤ 4 T,…
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Pulse sequence design for high field NMR with NV centers in dipolarly coupled samples
RF modulation of nuclear spins
Lee and Goldburg (LG) showed in a seminal paper26 that an off-resonant continuous RF field cancels, up to first order, the contribution to the nuclear spin dynamics of homonuclear dipole-dipole interactions if the LG…
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Magnon-polarons in the Fermi–Hubbard model
Scalapino, D. J., Loh, E. & Hirsch, J. E. d-wave pairing near a spin-density-wave instability. Phys. Rev. B 34, 8190–8192 (1986).
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Scalapino, D. J., Loh, E. & Hirsch, J. E….
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Quantized field with excitations of spacetime
In the previous section, we demonstrate that a particle in a quantized real scalar field \(\zeta (x)\) is an excitation of the underlying spacetime with oscillation in proper time. It is a proper time oscillator but it is not just ’sitting’…
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