Theory of Krylov quantum diagonalization
KQD consists of two main steps. The first is a quantum subroutine to construct the matrices
$${\tilde{H}}_{jk}=\langle {\psi }_{j}| H| {\psi }_{k}\rangle,\qquad {\tilde{S}}_{jk}=\langle {\psi }_{j}| {\psi…
Category: 4. Physics
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Quantum spin Hall effect in magnetic graphene
We bring graphene in the van der Waals proximity of the interlayer antiferromagnet, CrPS4 (CPS), which is an air-stable semiconductor with a bandgap of ~1.3 eV38 and a Néel temperature TN ≈ 38 K39. Figure 1a (top panel) illustrates a top…
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Time Has Three Dimensions, New Theory Says
A new theory by University of Alaska Fairbanks scientist Gunther Kletetschka argues that time comes in three dimensions rather than just the single one we experience as continual forward progression, and space emerges as a secondary…
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New Superheavy Nucleus Discovered: Seaborgium-257
A team of physicists from Germany, Finland, India and Japan has discovered a new isotope of the synthetic chemical element seaborgium.
Mosat et al. report on the discovery of the new isotope seaborgium-257. Image credit: P. Mosat, GSI/FAIR.
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Vacuum fluctuations in optical cavities reveal hidden properties of embedded materials
Optical cavities alter the electromagnetic vacuum, resulting in changes to the properties of materials placed inside them. However, probing these effects poses a significant… Continue Reading
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First Takes of the Largest Astronomical Movie Ever
• Physics 18, 122
The Vera C. Rubin Observatory has released its first images—a small preview of a decadal survey that will observe an unprecedented number of stars and galaxies, helping researchers tackle the biggest…
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Topological Twist for Phase Transitions
• Physics 18, 118
Contrary to conventional wisdom, so-called order parameters that distinguish symmetry-governed phases of matter…
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Machine learning revealed giant thermal conductivity reduction by strong phonon localization in two-angle disordered twisted multilayer graphene
Wang, Z., Alaniz, J. E., Jang, W., Garay, J. E. & Dames, C. Thermal conductivity of nanocrystalline silicon: importance of grain size and frequency-dependent mean free paths. Nano Lett. 11, 2206–2213 (2011).
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Author Correction: Detection of single-mode thermal microwave photons using an underdamped Josephson junction
Open Access This article is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License, which permits any non-commercial use, sharing, distribution and reproduction in any medium or…
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