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2017年8月30日，应固体所副所长曾雉研究员的邀请，德国不莱梅大学的Peter Deák教授做客凝聚态论坛 ，作了题为“Calculating defects and surfaces in diamond and TiO2”的学术报告，报告会由张永胜研究员主持。
A positive energy theorem for asymptotically de Sitter spacetimes
DE sitter spacetime conserved DE sitter universe spinor and energy
2014/12/22
We construct a set of conserved charges for asymptotically de Sitter spacetimes that correspond to asymptotic conformal isometries. The charges are given by boundary integrals at spatial infinity in t...
荷兰物理学会（De Nederlandse Natuurkundige Vereniging）
荷兰物理学会 De Nederlandse Natuurkundige Vereniging NNV
2014/3/5
De Nederlandse Natuurkundige Vereniging (NNV) is al sinds 1921 dé belangenbehartiger van de natuurkunde in Nederland. De NNV komt op voor de discipline natuurkunde in het voortgezet onderwijs, het hog...
Huygens' Principle for the Klein-Gordon equation in the de Sitter spacetime
Huygens’ Principle Klein-Gordon Equation de Sitter spacetime Higuchi Bound
2012/6/14
In this article we prove that the Klein-Gordon equation in the de Sitter spacetime obeys the Huygens' principle if and only if the physical mass $m$ of the scalar field and the dimension $n$ of the sp...
Anti de Sitter quantum field theory and a new class of hypergeometric identities
hypergeometric identities High Energy Physics - Theory Anti de Sitter quantum field theory
2011/10/9
Abstract: We use Anti-de Sitter quantum field theory to prove a new class of identities between hypergeometric functions related to the K\"all\'en-Lehmann representation of products of two Anti-de Sit...
de Broglie waves as the "Bridge of Becoming" between quantum theory and relativity
de Broglie waves quantum theory and relativity quantum level
2011/8/16
Abstract: It is hypothesized that de Broglie's 'matter waves' provide a dynamical basis for Minkowski spacetime in an antisubstantivalist or relational account. The relativity of simultaneity is seen ...
Andreev reflection and the semiclassical Bogoliubov-de Gennes Hamiltonian: resonant states
the semiclassical Bogoliubov-de Gennes Hamiltonian resonant states Mathematical Physics
2011/8/25
Abstract: We present a semi-classical analysis of the opening of superchannels in gated mesoscopic SNS junctions. For perfect junctions (i.e. hard-wall potential), this was considered by Chtchelkatche...
Sistemas de Lie y sus aplicaciones en Fisica y Teoria de Control
Lie systems Control Theory Mathematical Physics
2011/7/26
Sistemas de Lie y sus aplicaciones en Física y Teoría de Control.
根据广义乌龟坐标变换法(GTCT),对动态Kerr-Newman-de sitter黑洞的热辐射机制进行了研究.首先,利用在弯曲时空中描述自旋为0,质量为m的标量粒子的动力学方程(Klein-Gordon方程),再通过2种不同广义Tortoise坐标变换,最终得到了动态Kerr-Newman-de sitter黑洞在这2种不同情况下的热辐射谱,以及各自在事件视界处的霍金温度.通过对比研究发现,在2...
Schwarzschild-de Sitter black hole from entropic viewpoint
Schwarzschild-de Sitter black hole entropic viewpoint
2010/12/23
In a Schwarzschild-de Sitter space, we consider an equipotential surface which consists of two holographic screens. Adapting the Bousso-Hawking's reference point of vanishing force, we divide the spac...
De Sitter brane-world, localization of gravity, and the cosmological constant
De Sitter brane-world localization of gravity the cosmological constant
2010/12/24
Cosmological models with a de Sitter 3-brane embedded in a five-dimensional de Sitter spacetime (dS5) give rise to a finite 4D Planck mass similar to that in Randall-Sundrum (RS) brane-world models in...
Conformal field theories in anti-de Sitter space
Conformal field theories anti-de Sitter space
2010/12/24
In this paper we discuss the dynamics of conformal field theories on anti-de Sitter space, focussing on the special case of the N=4 supersymmetric Yang-Mills theory on AdS_4. We argue that the choice...
We show that an interacting spin-0 field on a de Sitter space background will break the underlying de Sitter symmetry. This is done first for a (1+1) de Sitter space where a boson-fermion corresponde...
Infrared behavior and gauge artifacts in de Sitter spacetime. I. The photon field
Infrared behavior gauge artifacts
2010/12/27
We study the infrared (long distance) behavior of the free photon field in de Sitter spacetime. Using a two-parameter family of gauge fixing terms, we show that the infrared (IR) behavior of the two-...
We apply the nonstandard loop quantum cosmology method to quantize a flat FRW cosmological model with a free scalar field and the cosmological constant $\Lambda>0$. Modification of the Hamiltonian in ...