Results 81 to 90 of about 1,067,815 (281)

Spontaneous conformal symmetry breaking in fishnet CFT

Physics Letters B, 2020
Quantum field theories with exact but spontaneously broken conformal invariance have an intriguing feature: their vacuum energy (cosmological constant) is equal to zero. Up to now, the only known ultraviolet complete theories where conformal symmetry can
Georgios K. Karananas, Vladimir Kazakov, Mikhail Shaposhnikov   +2 more
doaj   +1 more source

Organic Materials of Tomorrow: Horizons of Artificial Intelligence

Advanced Materials, EarlyView.
This review examines machine learning techniques accelerating the discovery of organic semiconductors by linking molecular structure to properties. Key methods include graph neural networks, generative models, and active learning. Applications to organic photovoltaics demonstrate practical impact.
Harold Mena, J. Terence Blaskovits, Kun‐Han Lin, Denis Andrienko   +3 more
wiley   +1 more source

Time-reversal symmetry breaking in the noncentrosymmetric Zr3Ir superconductor [PDF]

, 2020
We report the discovery of Zr3Ir as a structurally different type of unconventional noncentrosymmetric superconductor (with Tc=2.3 K), here investigated mostly via muon-spin rotation/relaxation (μSR) techniques.
Shi, M., Chang, L.J., Gawryluk, D.J., Zhao, J.Z., Shang, T., Ghosh, S.K., Baines, C., Quintanilla, Jorge, Lee, M.K., Medarde, M., Shiroka, T.   +10 more
core   +1 more source

Measuring the Hall Effect in Hysteretic Materials

Advanced Materials, EarlyView.
The authors highlight common pitfalls in measuring the Hall effect: in hysteretic magnets, improper data processing can create signals that look exotic but are not real. This Perspective explains the origin of these artifacts and presents practical measurement strategies that help researchers identify reliable Hall responses in complex magnetic ...
Jaime M. Moya, Anthony Voyemant, Sudipta Chatterjee, Scott B. Lee, Grigorii Skorupskii, Connor J. Pollak, Leslie M. Schoop   +6 more
wiley   +1 more source

Self-dual higher spin theory: Poincaré invariance and new solutions

Journal of High Energy Physics
In this paper we study the self-dual higher spin theory in 4d recently proposed in [1]. The typical vacuum of higher spin theories is an empty AdS space-time.
I. S. Faliakhov
doaj   +1 more source

Corrections to Wigner-Eckart Relations by Spontaneous Symmetry Breaking

, 2020
The matrix elements of operators transforming as irreducible representations of an unbroken symmetry groupGare governed by the well-known Wigner-Eckart relations.
Strocchi, Franco, Franco Strocchi, Strocchi, Franco,, Heissenberg, Carlo,, Heissenberg, Carlo, Carlo Heissenberg   +5 more
core   +1 more source

The Jahn–Teller and Pseudo-Jahn–Teller Effects: A Unique and Only Source of Spontaneous Symmetry Breaking in Atomic Matter

, 2021
In a mostly review paper, we show that the important problem of symmetry, broken symmetry, and spontaneous broken symmetry of polyatomic systems is directly related to the Jahn–Teller (JT) and pseudo-Jahn–Teller (PJT) effects, including the hidden-JT and
Isaac B. Bersuker
core   +1 more source

Emergent Spin Supersolids in Frustrated Quantum Materials

Advanced Materials, EarlyView.
This review highlights developments in the study of spin super‐solids in frustrated quantum materials. Advanced experimental characterizations and computational studies enable a comprehensive understanding of the driving mechanisms of spin super‐solidity in various layered transition‐metal compounds, bridging materials, experiments, and theory aspects.
Yixuan Huang, Seiji Yunoki, Sadamichi Maekawa   +2 more
wiley   +1 more source

symmetry broken supersolid in spin–orbit-coupled Bose–Einstein condensates

New Journal of Physics
Supersolid is an exotic state of matter characterized by both superfluid properties and periodic particle density modulation, due to spontaneous breaking of U (1) gauge symmetry and spatial translation symmetry, respectively. For conventional supersolids,
Ze-Hong Guo, Qizhong Zhu
doaj   +1 more source

Weak In‐Plane Ferromagnetism and Electronic Nematicity in the Distorted Triple‐Q Magnetic Phase of Co1/3TaS2

Advanced Materials, EarlyView.
Co1/3TaS2${\rm Co}_{1/3}{\rm TaS}_{2}$ hosts a triple‐Q noncoplanar antiferromagnetic state with coexisting Z3${\rm Z}_3$ electronic nematicity. We report rotational hysteresis observed in both magnetoresistance and magnetic torque, revealing strongly pinned in‐plane weak ferromagnetic moments in the triple‐Q phase and the magnetism‐driven nature of ...
Joonyoung Choi, Woonghee Cho, Pyeongjae Park, Woun Kang, Je‐Geun Park, Younjung Jo   +5 more
wiley   +1 more source