Classical radiation fields for scalar, electromagnetic, and gravitational waves with spacetime-symmetry breaking

Kavli Affiliate: Lijing Shao | First 5 Authors: Quentin G. Bailey, Alexander S. Gard, Nils A. Nilsson, Rui Xu, Lijing Shao | Summary: An effective field theory framework is used to investigate some Lorentz-violating effects on the generation of electromagnetic and gravitational waves, complementing previous work on propagation. Specifically we find solutions to a modified, […]


Continue.. Classical radiation fields for scalar, electromagnetic, and gravitational waves with spacetime-symmetry breaking

Classical radiation fields for scalar, electromagnetic, and gravitational waves with spacetime-symmetry breaking

Kavli Affiliate: Lijing Shao | First 5 Authors: Quentin G. Bailey, Alexander S. Gard, Nils A. Nilsson, Rui Xu, Lijing Shao | Summary: An effective field theory framework is used to investigate some Lorentz-violating effects on the generation of electromagnetic and gravitational waves, complementing previous work on propagation. Specifically we find solutions to a modified, […]


Continue.. Classical radiation fields for scalar, electromagnetic, and gravitational waves with spacetime-symmetry breaking

Photochemical origin of SiC$_2$ in the circumstellar envelope of carbon-rich AGB stars revealed by ALMA

Kavli Affiliate: Ke Wang | First 5 Authors: Yanan Feng, Xiaohu Li, Tom J. Millar, Ryszard Szczerba, Ke Wang | Summary: Whether SiC$_2$ is a parent species, that is formed in the photosphere or as a by-product of high-temperature dust formation, or a daughter species, formed in a chemistry driven by the photodestruction of parent […]


Continue.. Photochemical origin of SiC$_2$ in the circumstellar envelope of carbon-rich AGB stars revealed by ALMA

Direct observation of chiral edge current at zero magnetic field in odd-layer MnBi$_2$Te$_4$

Kavli Affiliate: Jing Wang | First 5 Authors: Jinjiang Zhu, Yang Feng, Xiaodong Zhou, Yongchao Wang, Zichen Lian | Summary: The chiral edge current is the boundary manifestation of the Chern number of a quantum anomalous Hall (QAH) insulator. Its direct observation is assumed to require well-quantized Hall conductance, and is so far lacking. The […]


Continue.. Direct observation of chiral edge current at zero magnetic field in odd-layer MnBi$_2$Te$_4$

Colliding red giants in galactic nuclei: Shocks, jets, impact on the ISM, X- and gamma-rays, neutrinos, fusion ignition and afterglow

Kavli Affiliate: Pau Amaro Seoane | First 5 Authors: Pau Amaro Seoane, , , , | Summary: In galactic nuclei, stellar densities are so high that stars can physically collide with each other. In this work we focus on the collision of red giants and in particular on the formation of non-thermal processes through collisions […]


Continue.. Colliding red giants in galactic nuclei: Shocks, jets, impact on the ISM, X- and gamma-rays, neutrinos, fusion ignition and afterglow

Colliding red giants in galactic nuclei: Shocks, jets, impact on the ISM, X- and gamma-rays, neutrinos, fusion ignition and afterglow

Kavli Affiliate: Pau Amaro Seoane | First 5 Authors: Pau Amaro Seoane, , , , | Summary: In galactic nuclei, stellar densities are so high that stars can physically collide with each other. In this work we focus on the collision of red giants and in particular on the formation of non-thermal processes through collisions […]


Continue.. Colliding red giants in galactic nuclei: Shocks, jets, impact on the ISM, X- and gamma-rays, neutrinos, fusion ignition and afterglow

Giant anisotropic band flattening in twisted $Γ$ valley semiconductor bilayers

Kavli Affiliate: Jing Wang | First 5 Authors: Huan Wang, Zhaochen Liu, Yadong Jiang, Jing Wang, | Summary: We propose a theory of anisotropic band flattening in moir’e systems at the $Gamma$ valley. We find that in twisted anisotropic two-dimensional crystals with a rectangular unit cell of $C_{2z}$ or mirror symmetries, a larger effective mass […]


Continue.. Giant anisotropic band flattening in twisted $Γ$ valley semiconductor bilayers

Giant anisotropic band flattening in twisted $Γ$ valley semiconductor bilayers

Kavli Affiliate: Jing Wang | First 5 Authors: Huan Wang, Zhaochen Liu, Yadong Jiang, Jing Wang, | Summary: We propose a general theory of anisotropic band flattening in moir’e systems at the $Gamma$ valley. For a two-dimensional semiconductor with a rectangular unit cell of $C_{2z}$ or mirror symmetries, we find that a larger effective mass […]


Continue.. Giant anisotropic band flattening in twisted $Γ$ valley semiconductor bilayers