A new view on gravity beyond Einstein by N.T. Duy* * Institute of Physics, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam. Recent research published in The European Physical Journal C [3] has highlighted an important advancement in the study of modified gravity, providing new insights into the dynamics of black holes, stars, and gravitational wave emission. The researcher constructs a "perturbative f(R) theory" to modify Einstein's general relativity (GR) and makes predictions
N.T. Duy
Engineering spin-1 chains within the Haldane phase on a qudit quantum processor by Murray Batchelor The Haldane phase is a paradigmatic example of a symmetry protected topological (SPT) phase found in the spin-1 Heisenberg chain. The Haldane phase has several characteristic features. In addition to symmetry protection and the presence of an energy gap there are also fractionalised spin-1/2 edge states, which are hosted at the ends of the chain when the spin chain has open boundaries. This is a
Murray Batchelor
Superconductivity (SC) arises when electrons form Cooper pairs that move collectively without resistance. In the weak-coupling regime, this pairing is described by the Bardeen-Cooper-Schrieffer (BCS) theory, where electrons form weakly bound, overlapping Cooper pairs. In the opposite, strong-coupling limit, electrons form tightly bound bosonic pairs that undergo Bose–Einstein condensation (BEC). The smooth evolution between these two regimes—the BCS-BEC crossover—has been extensively studied in
Hiroshi Watanabe, Hiroaki Ikeda
RIKEN, Hirosawa 2–1, Wako, 351–0198, Japan. Quantum spin liquids (QSLs)—exotic magnetic states where electron spins remain disordered even at absolute zero—have long fascinated physicists for their rich entanglement and potential to host exotic quasiparticles [27,28,29]. Yet, the challenge has always been in stabilizing and probing such states in real materials. Molecular solids offer a clean platform with two-dimensional triangular lattices, which can be an ideal system to host QSLs. Two candi
Shigeki Fujiyama
1Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China 2School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China Two-dimensional (2D) materials, starting with the groundbreaking exfoliation of graphene in 2004, have initiated the “2D Age” and transformed the landscape of fundamental research and technological advances in condensed-matter physics, materials science, and beyond [
Luojun Du
Dark energy evolution: new insights from DESI by Shadab Alam The accelerating expansion of our universe, attributed to dark energy, has been a cornerstone of modern cosmology since its discovery in 1999. Recent findings from the Dark Energy Spectroscopic Instrument (DESI) may significantly transform our understanding of cosmic acceleration [1, 2]. In this article, we explore the implications of these new measurements and their potential to reshape fundamental physics. 1.1 The journey from a sta
Shadab Alam
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