搜索结果: 1-13 共查到“物理学 CPT”相关记录13条 . 查询时间(0.255 秒)
中国成功研制小型便携式CPT原子钟
中国 CPT原子钟
2018/3/6
航天科工203所获悉,该所研制出了基于相干布居囚禁的量子频标小型便携式CPT原子钟,体积约半个烟盒大小。核心技术指标已优于国外同类产品水平,功耗约1瓦,是国外同类产品的五分之一,守时精度可达每天1微秒。
视频:南京大学大学物理学第71讲 CPT Theorem
南京大学 大学物理学 第71讲 CPT Theorem 视频
2012/4/5
视频:南京大学大学物理学第71讲 CPT Theorem。
CPT groups of higher spin fields
CPT groups fields on the Poincare group Clifford algebras automorphism groups higher spin fields
2011/9/16
Abstract: $CPT$ groups of higher spin fields are defined in the framework of automorphism groups of Clifford algebras associated with the complex representations of the proper orthochronous Lorentz gr...
A new version of an elementary PT-symmetric square well quantum model is proposed in which a certain Hermiticity-violating end-point interaction leaves the spectrum real in a large domain of couplings...
Limit on Lorentz and CPT violation of the bound Neutron Using a Free Precession 3He/129Xe co-magnetometer
Lorentz CPT violation of the bound Neutron Free Precession 3He/129Xe co-magnetometer
2010/12/20
We report on the search for Lorentz violating sidereal variations of the frequency difference of colocated spin-species while the Earth and hence the laboratory reference frame rotates with respect to...
se Measurements of Direct CP Violation, CPT Symmetry, and Other Parameters in the Neutral Kaon System
se Measurements of Direct CP Violation, CPT Symmetry Other Parameters Neutral Kaon System
2011/1/4
We present precise tests of CP and CPT symmetry based on the full dataset of K ! ππ decays
collected by the KTeV experiment at Fermi National Accelerator Laboratory during 1996, 1997, and 1999.
I show that the CP-violating asymmetry in K0 vs K0→π+π-π0 decays differs from that in KL→π+π-, KL→π0π0 or the semileptonic KL transitions, if there exists CPT violation in K0-K0 mixing. A delicate mea...
武汉物理数学研究所国产CPT原子频标研制取得新进展
武汉物理数学研究所 国产CPT 原子频标
2009/11/5
顾思洪小组CPT原子钟研究取得新进展
CPT原子钟 新进展
2008/7/21
CPT原子钟是利用原子的相干布局囚禁原理而实现的一种新型原子钟,也是目前从原理上唯一可实现微型化的原子钟,其体积、功耗比目前体积、功耗最小的铷原子钟相比还要小得多。最小的CPT原子钟可为手表尺寸,并用纽扣电池供电。由于这些特点,CPT原子钟在远程通讯系统定时、大范围通讯网络同步、武器装备的便携化等军、民应用方面具有很好的应用前景。例如,CPT频标应用于GPS接收机,可以显著提高导航定位精度。欧美等...
CPT maser铷原子钟研究取得突破性进展
CPT原子钟 突破性进展
2008/7/7
CPT原子钟是基于相干布居囚禁CPT(Coherent Population Trapping)理论实现的新概念原子钟。用微波信号控制两束相干激光束的频差,应用激光场与原子三能级系统相互作,无需传统原子钟的原子态选择系统,将微波频率锁定在原子基态超精细能级间的跃迁频率上,从而获得高精度的标准频率信号输出。光频移是限制传统铷钟性能提高的主要因素,CPT原子钟在理论上没有一级光频移问题。基于CPT理论...
Remarks on Lorentz and CPT Violation in Field Theory
Lorentz and CPT violation Chern-Simons-like Finite temperature
2010/9/29
In this brief review we explicitly calculate the radiative corrections to the Chern-Simons-like term in the cases of zero and finite temperature, and in the gravity theory. Our results are obtained un...