... The semihadronic tau decay width allows a clean extraction of the strong coupling constant at low energies. We present a modification of the standard ‘‘contour-improved’’ method based on a derivative expansion of the ...

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... Published online 31 January 2012 – c EDP Sciences, Societ` a Italiana di Fisica, Springer-Verlag 2012 Abstract. We develop an alternative approach to the time independent **perturbation** **theory** in non- ...

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... fluid **theory** 共 SAFT 兲 for branched chain molecules using Wertheim’s first- and second-order thermodynamic **perturbation** **theory** with a hard-sphere reference fluid 共 SAFT-B 兲 ...second-order ...

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... thermodynamic **perturbation** **theory** 共 TPT1 兲 关 ...extended **theory** is used to determine the global 共 solid–liquid–vapor 兲 phase diagram of the LJ dimer model; the theoretical estimate of the triple ...

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... In the previous sections, we saw how to construct a Lagrangian invariant under a group G spontaneously broken into a a subgroup H where the Gold- stone bosons appear as the coordinates (ξ) of the broken symmetry gener- ...

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... thermodynamic **perturbation** **theory** is proposed to describe the global phase behavior of linear rigid tangent hard sphere ...proposed **theory** can be used to describe correctly the equation of state, ...

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... turbation **theory** and equations of state of complex fluids, in the 1980’s Wertheim 37– 40 presented a series of seminal pa- pers developing a **theory** for associating ...the **theory**, known as first-order ...

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... The management of ruminant growth yield has economic importance. The current work presents a study of the spatiotemporal dynamic expression of Ghrelin and GHR at mRNA levels throughout the gastrointestinal tract (GIT) of ...

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... x-axis represents the main clusters of parameters from xn row vectors used to predict the VDAC channel nanotoxicity for individual pristine SWCNT xi, such as n: Hamada index, Ch: Chiral [r] ...

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... momentum distribution function f (k) describing the population of plane-wave states of real particles (and not Landau’s quasiparticles) in the translationally invariant system differs from the ideal momentum distribution ...

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... Spatial Adiabatic Perturbation Theory (SAPT) Hofstadter model.. Harper model.[r] ...

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... a **perturbation** with respect to the solvable ...of **perturbation**, that mean, if is static or not, one must resort to the time-independent or time-dependent **perturbation** ...Matrix **perturbation** ...

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... A global averaging technique on phase spaces with symmetry was developed by S.Golin, A. Knauf, S. Marmi [28] and R. Montgomery [55] for the study of slowly varying integrable systems and extended to Poisson bundles by J. ...

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... loop **perturbation** calculation ...chiral **perturbation** **theory** ...chiral **perturbation** **theory** agree quite well with our conclusions for a 2 0 ð T Þ ...

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... Our results agree qualitatively well with two previous calculations. The first one [8], was done in the frame of the chiral **perturbation** **theory** at the one-loop level, whereas the linear sigma model was used ...

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... Time-dependent **perturbation** **theory** as a tool to compute approximate solutions of the Schr¨ odinger equation does not preserve ...exponential **perturbation** **theory** ) provides such unitary ...

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... usual **theory** results always using one or another version of **perturbation** **theory** that strongly reduces real interaction processes and leads inevitably to regular kind of dynamics (even in its versions ...

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... Among the regularization procedures of the first group the classical method of Bogoliubov, Parasiuk, Hepp and Zimmermann (BPHZ), by its conceptual clarity, is the most rigorous. In this method divergent integrals are ...

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... The criterion of Zappala,Cellino,Farinella and Knezevic (1992 and subsequent) is important since an improved asteroids classification was noted in dynamic families, analyzing a numbered asteroids database, whose proper ...

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