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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Wormholes, Berry phases and factorization
虫洞 浆果阶段 因子分解 编码拓扑信息
2023/5/15
I shall start by reviewing the connection between the wormholes and entanglement in the context of AdS/CFT. I shall then show how the Berry phase, a geometrical phase encoding information about the to...
Quantum Thermalization and Novel Phases in Non-equilibrium Quantum Systems
Quantum Thermalization Non-equilibrium Quantum Systems Novel Phases
2023/1/4
Universal quantum computers offer us the opportunities to implement novel quantum matter far away from equilibrium states. There has been remarkable progress in our understanding of the non-ergodic an...
Antarctic Circumpolar Current flows more rapidly in warm phases
ACC warm phases climate change
2021/8/4
Our planet's strongest ocean current, which circulates around Antarctica, plays a major role in determining the transport of heat, salt and nutrients in the ocean. An international research team led b...
Relationship between geomagnetic classes’ activity phases and their occurrence during the sunspot cycle
Classes of geomagnetic activity Phases of geomagnetic classes Sunspot cycle
2015/8/28
Four well known geomagnetic classes of activity such as quiet days activity, fluctuating activity, recurrent activity and shock activity time occurrences have been determined not only by using time pr...
Classical phases and quantum angles in the description of interfering Bose-Einstein condensates
Condensate random variables measurements
2014/12/19
The interference of two Bose-Einstein condensates, initially in Fock states, can be described in terms of their relative phase, treated as a random unknown variable. This phase can be understood eithe...
SMART FILTERING OF INTERFEROMETRIC PHASES FOR ENHANCING BUILDING RECONSTRUCTION
Remote Sensing Building Reconstruction High Resolution InSAR
2014/5/8
The current generation of space borne high resolution SAR sensors provides high spatial resolution as well as interferometric data within short time frames. This makes such data attractive for 3D info...
Enrichment of Phosphate on Ferrous Iron Phases during Bio-Reduction of Ferrihydrite
Phosphate Iron Reduction Ferrihydrite Ferrous Iron Vivianite
2013/3/7
The reduction of less stable ferric hydroxides and formation of ferrous phases is critical for the fate of phosphorus in anaerobic soils and sediments. The interaction between ferrous iron and phospha...
Nanoscale layering of antiferromagnetic and superconducting phases in Rb2Fe4Se5
Nanoscale layering antiferromagnetic superconducting phases Rb2Fe4Se5
2012/2/27
We studied phase separation in a single-crystalline antiferromagnetic superconductor Rb2Fe4Se5 (RFS) using a combination of scattering-type scanning near-field optical microscopy (s-SNOM) and low-ener...
Magnetic phases in the one-dimensional Kondo chain on a metallic surface
Magnetic phases the one-dimensional Kondo chain metallic surface
2012/2/27
We study the low-temperature properties of a one-dimensional spin-1/2 chain of magnetic impurities coupled to a (normal) metal environment by means of anisotropic Kondo exchange. In the case of easy-p...
The Superconducting Phases of URu2Si2: Longitudinal Sound Velocity Measurements
Superconducting Phases URu2Si2 Longitudinal Sound Velocity Measurements
2012/2/27
High resolution longitudinal sound velocity measurements in a magnetic field performed in the temperature tending to zero limit reveal two distinct signatures attributable to multiple superconducting ...
Reconstruction of f(R, T) gravity describing matter dominated and accelerated phases
Reconstruction gravity describing dominated accelerated phases
2011/10/12
We investigate the cosmological reconstruction in modified f(R,T) gravity, where R is the Ricci scalar and T the trace of the stress-energy tensor. Special attention is attached to the case in which t...
Here we propose the generalized statistical multifragmentation model which includes the liquid phase pressure of the most general form. This allows us to get rid of the absolute incompressibility of t...
Edge states and topological phases in non-Hermitian systems
Edge states topological phases non-Hermitian systems Mesoscale and Nanoscale Physics
2011/9/30
Abstract: Topological stability of the edge states is investigated for non-Hermitian systems. We examine two classes of non-Hermitian Hamiltonians supporting real bulk eigenenergies in weak non-Hermit...
Quest for a new form of matter inside compact stars compels us to examine the thermodynamical properties of the phase transitions. We closely consider the first-order phase transitions and the phase e...
Galois Conjugates of Topological Phases
conformal field theories topological quantum field theories Galois Conjugates
2011/7/28
Abstract: Galois conjugation relates unitary conformal field theories (CFTs) and topological quantum field theories (TQFTs) to their non-unitary counterparts. Here we investigate Galois conjugates of ...