搜索结果: 1-15 共查到“物理学 NO”相关记录32条 . 查询时间(0.106 秒)
中国科学技术大学物理学院彭新华研究组首次实现超越No-go定理的超辐射相变模拟（图）
No-go定理 平衡态 超辐射相变 量子模拟
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2021/11/9
中国科学技术大学物理学院彭新华研究组和华中科技大学吕新友教授合作，在超辐射相变量子模拟的实验研究中取得重要进展。该合作研究组通过引入反压缩操作，借助于高精度的量子控制技术，首次成功地在核磁共振量子模拟器上实验实现了超越No-go定理的平衡态超辐射相变，推动了量子相变理论和量子模拟领域的发展，为量子精密测量提供了新的途径。相关研究成果于11月1日以“Experimental quantum simu...
Proton magnetic resonance spectroscopy reveals increased hepatic lipid content after a single high-fat meal with no additional modulation by added protein
H-MRS IHL IMCL postprandial protein
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2018/12/20
Background: Fat accumulation in nonadipose tissue is linked to insulin resistance and metabolic diseases. Earlier studies have shown that hepatic lipid accumulation can occur after 4 d of a high-fat d...
NO冷却率在连续磁暴中对热层密度的影响
NO冷却率 热层密度 磁暴
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2014/7/7
基于CHAMP卫星加速度计数据，对2002年4月和2004年11月两个连续磁暴事件期间400 km高度热层大气密度时空变化特征进行了分析，结果表明，地磁扰动相近的连续磁暴发生时，热层密度对第一个磁暴的响应幅度明显大于后续磁暴；磁暴间歇期有时会出现密度低值；磁暴恢复相，热层密度先于ap指数快速恢复至暴前水平，甚至更低；热层大气经验模式NRLMSISE00的预测结果中没有包含这些现象.利用TIMED卫...
3-D imaging provides window into living cells, no dye required（图）
3-D imaging living cells
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2014/3/18
CHAMPAIGN, Ill. — Living cells are ready for their close-ups, thanks to a new imaging technique that needs no dyes or other chemicals, yet renders high-resolution, three-dimensional, quantitative imag...
Optical Millimeter-Wave Signal Generation Using Frequency Quadrupling Technique and No Optical Filtering
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2011/11/22
This letter demonstrates a novel method to generate high-purity optical millimeter-wave signals with carrier suppression by using a frequency quadrupling technique. To the authors’ knowledge, this is ...
NO-N2系统不同电离度下非平衡等离子体脱除NO的数值模拟
非平衡等离子体 电离度 NO脱除 数值模拟
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2012/6/29
采用非平衡等离子体脱除NO-N2系统中NO的简化模型，对不同电离度下反应中主要粒子的变化规律及NO脱除效率进行分析和计算。结果表明，电子数密度随时间按指数规律快速衰减；初始电子相对数密度是决定体系非平衡等离子体NO脱除的本质因素，初始电子相对数密度大，体系NO脱除效率高；较高的电离度适合产生高密度的中间产物N和O，N和O数密度随时间呈现快速增长达到峰值又快速衰减为0的变化趋势；反应的最终产物为N2...
No-Go theorem for energy surfaces
energy surfaces No-Go theorem
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2011/7/20
Concavity properties prevent the existence of significant landscapes in energy surfaces obtained by energy minimizations under constraints.
A No-Go Theorem for the Consistent Quantization of the Massive Gravitino on Robertson-Walker Spacetimes and Arbitrary Spin 3/2 Fields on General Curved Spacetimes
No-Go Theorem the Consistent Quantization the Massive Gravitino Robertson-Walker Spacetimes General Curved Spacetimes
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2011/7/29
Abstract: We first introduce a set of conditions which assure that a free spin $\frac32$ field with $m\ge 0$ can be consistently ('unitarily') quantized on all curved spacetimes, i.e. also on spacetim...
No-Go theorem for energy surfaces
No-Go theorem energy surfaces Concavity property Nuclear Theory
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2011/7/28
Abstract: Concavity properties prevent the existence of significant landscapes in energy surfaces obtained by energy minimizations under constraints. The contradiction holds at finite temperatures T a...
Ground states of semi-relativistic Pauli-Fierz and no-pair Hamiltonians in QED at critical Coulomb coupling
Existence of ground states exponential localization no-pair Hamiltonian quantum electrodynamics
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2011/7/26
Abstract: We consider the semi-relativistic Pauli-Fierz Hamiltonian and a no-pair model of a hydrogen-like atom interacting with a quantized photon field at the respective critical values of the Coulo...
The Curious Case of Lemaitre's Equation No. 24
English translation Lemaitre's Equation No. 24
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2011/8/30
In August of 1961 Abb?Georges Lema顃re told me (with a twinkle in his eyes) that, being a priest, he felt a slight bias in favor of the idea that the Universe had been created. It must therefore have b...
There are no Static Solutions in Source-Free Non-commutative $U_{\star}(1)$ Gauge Theory
Static Solutions Source-Free Non-commutative
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2010/12/24
The vanishing of self-stress for static systems excludes finite energy time-independent solutions of source-free $U_{\star}(1)$ theory in (3+1) dimensions. This implies that static solutions in case $...
Bethe lattice solution of a model of SAW's with up to 3 monomers per site and no restriction
Bethe lattice solution model of SAW's 3 monomers per site no restriction
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2010/11/23
In the multiple monomers per site (MMS) model, polymeric chains are represented by walks on
a lattice which may visit each site up to K times. We have solved the unrestricted version of this model, w...
Optimal Quantum State Estimation by No-Signaling Principle
No-Signaling Principle Quantum Physics
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2010/11/8
We obtain a simple derivation of the optimal quantum state estimation of a two-level system using the no-signaling principle. In particular, we show that the no-signaling principle determines the uni...
An efficient method for the incompressible Navier-Stokes equations on irregular domains with no-slip boundary conditions, high order up to the boundary
the incompressible Navier-Stokes equations irregular domains no-slip boundary conditions
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2010/11/18
Common efficient schemes for the incompressible Navier-Stokes equations, such as projection or fractional step methods, have limited temporal accuracy as a result of matrix splitting errors, or introd...