singular f-sum ruleanharmonic crystalsBose liquids/ A6740D Quantum statistical theoryground state, elementary excitations (liquid helium-4)The validity and applicability to inelastic neutron scattering of a singular f-sum rule for superfluid helium, proposed by Griffin to explain the s dependence in ...
什么是 f-Sum Rule 以及 Kohn Theorem，以及二者有无关联？众所周知，f-Sum Rule 是 Ward Identity...
Investigations of the πN total cross sections at high energies using a new finite-energy sum rule: log ν or (log ν)2 We propose to use rich information on π p total cross sections below N ( 10 GeV ) in addition to high-energy data in order to discern whether these cr... K Ig...
Further, estimates of fi”’ in the framework of QCD sum rules and in lattice computations are in agreement with each other and result in [ 11 fi? = 240 & 40 MeV . (2) The sum rule estimation of the average heavy quark momentum squared inside the meson gives the value [IS,91 &=...
The Borel mass is fixed by the rule of thumb that the contribution from high dimension condensate terms is no larger than twenty percents in the truncated OPE, and simultanously the contribution from excited and continuum states is smaller than thirty percents when summing up the hadrons. The...
We revisit the sum-rule extraction of the decay constants of the D, Ds, B and Bs mesons from the two-point correlator of heavy鈥搇ight pseudoscalar current... W Lucha,D Melikhov,S Simula - 《Journal of Physics G Nuclear & Particle Physics》 被引量: 76发表: 2011年 B meson decay con...
而且很多行为规范都需要小朋友共同来遵守当中的rule (法则),如果某一方小朋友破坏了这个rule,另一方小朋友就算坚守这个rule,法则本身也失去了存在的意义。加上小孩子遇事缺乏对愤怒的控制能力,当一方小朋友不遵循rule的时候,另一方很容易被激怒,头脑发热冲动起来。,。。。所以这个时候,告诉小乖的不仅仅是怎样做是道理...
The QCD sum rule (QCDSR) of the neutral scalar coupling is quoted as \begin{aligned}{} & {} m_S^2 {{\bar{f}}}_S^2(\mu ) e^{- m_S^2/M^2} = I_0^{\textrm{pert}}(s_0,M^2) + \langle {\bar{q}}q \rangle I_0^{\langle {\bar{q}}q \rangle }(M^2) \nonumbe...
Gottfried sum rule and the shape of F {2/}- F {2/} The recent experimental determination of the Gottfried sum rule of deep inelastic scattering provides strong evidence that SU(2) flavor symmetry is broken ... W Melnitchouk,AW Thomas,AI Signal - 《Zeitschrift Für Physik A Hadrons & ...
c_0 =\; \rule{20mm}{.5pt} c_1= Represent the function f(x) = x^{0.6} as a power series: \sum_{n = 0}^\infty c_n(x - 1)^n Find the following coefficients. c_0 = \boxed{\space}.\\c_1= \bo...