Non-adiabatic Hall effect at Berry curvature hot spot [PDF]
2D Materials, 2020 Hot spot of Berry curvature is usually found at Bloch band anti-crossings, where the Hall effect due to the Berry phase can be most pronounced. With small gaps there, the adiabatic limit for the existing formulations of Hall current can be exceeded in a ...
M. Tu, Ci Li, Hongyi Yu, W. Yao
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The Innovation, 2023 The modulation of topological electronic state by an external magnetic field is highly desired for condensed-matter physics. Schemes to achieve this have been proposed theoretically, but few can be realized experimentally.
Jianlei Shen +17 more
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Berry Curvature and Riemann Curvature in Kinematic Space with Spherical Entangling Surface [PDF]
Fortschritte der Physik, 2020 We discover the connection between the Berry curvature and the Riemann curvature tensor in any kinematic space of minimal surfaces anchored on spherical entangling surfaces.
Xing Huang, Chen-Te Ma
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Emergent gravity and D-brane adiabatic dynamics: emergent Lorentz connection [PDF]
Classical and quantum gravity, 2021 We explore emergent geometry of the spacetime at the microscopic scale by adiabatic transport of a quasi-coherent state of a fermionic string, with quantum spacetime described by the matrix theory (BFSS matrix model).
D. Viennot
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Local Berry curvature signatures in dichroic angle-resolved photoelectron spectroscopy from two-dimensional materials [PDF]
Science Advances, 2019 Orbital polarization and Berry curvature signatures are mapped out by circular dichroism in angle-resolved photoemission. Topologically nontrivial two-dimensional materials hold great promise for next-generation optoelectronic applications.
M. Schüler +5 more
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Berry curvature inside a
Physical review BA three-dimensional non-Hermitian Hamiltonian with parity-time symmetry can exhibit a closed exceptional surface (EP surface) in momentum space, which is a non-Hermitian deformation of the degeneracy line (DL). Since the degeneracy line lacks an internal
P. Wang, L. Jin, Z. Song
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Novel Topological Phase with a Zero Berry Curvature. [PDF]
Physical Review Letters, 2017 We present a two-dimensional (2D) lattice model that exhibits a nontrivial topological phase in the absence of the Berry curvature. Instead, the Berry connection provides the topological nontrivial phase in the model, whose integration over the momentum ...
Feng Liu, K. Wakabayashi
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Berry curvature, horocycles, and scattering states in AdS3/CFT2 [PDF]
Physical Review D, 2019 By studying the space of geodesics in $ADS_3/CFT_2$ and quantizing the geodesic motion, we relate scattering data to boundary entanglement of the CFT vacuum.
P. L'evay
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Berry phase in generalized chiral $QED_2$ [PDF]
, 1996 We consider the generalized chiral $QED_2$ on $S^1$ with a $U(1)$ gauge field coupled with different charges to both chiral components of a fermionic field. Using the adiabatic approximation we calculate the Berry phase and the corresponding ${\rm U}(1)$
Berry M V +12 more
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Simultaneous symmetry breaking in spontaneous Floquet states: temporal Floquet-Nambu-Goldstone modes, Floquet thermodynamics, and the time operator [PDF]
QuantumWe study simultaneous symmetry breaking in spontaneous Floquet states, focusing on the specific case of an atomic condensate. We first describe the quantization of the Nambu-Goldstone (NG) modes for a stationary state simultaneously breaking several ...
Juan Ramón Muñoz de Nova +1 more
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