1,721,001 research outputs found
BOOTSTRAP TREES AND CONSISTENT S-MATRICES
No full textWe analyze the tree structure arising from the recursive bootstrap equations, given the S matrix of the lightest particle. When S11 contains only one singularity, among all possible bootstrap systems, the only ones which give rise to a consistent set of S matrices coincide with those of sine-Gordon breathers at the reduction point zeta = 2-pi/(2n + 1). We also present our investigation of bootstrap systems defined by an S11 with a higher number of singularities. The only consistent examples we found belong to the set of minimal S matrices corresponding to Dynkin diagrams
Bone tissue formation in rat vertebral body during the recovery phase following to a low calcium diet
No full textIntegrable perturbations of CFT with complex parameter: The M3/5 model and its generalizations
No full textBy using the thermodynamic Bethe ansatz approach, we give evidence of the existence of both massive and massless behaviors for the φ2,1 perturbation of the M3,5 nonunitary minimal model, thus resolving apparent contradictions in the previous literature. The two behaviors correspond to changing the perturbing bare coupling constant from real values to imaginary ones. Generalizations of this picture to the whole class of nonunitary minimal models Mp,2p±1, perturbed by their least relevant operator, lead to a cascade of flows similar to that of unitary minima] models perturbed by φ1,3. Various aspects and generalizations of this phenomenon and the links with the Izergin-Korepin model are discussed
Dynkin TBA's
No full textWe prove a useful identity valid for all ADE minimal S-matrices, that clarifies the transformation of the relative thermodynamic Bethe Ansatz (TBA) from its standard form into the universal one proposed by Al. B. Zamolodchikov. By considering the graph encoding of the system of functional equations for the exponentials of the pseudo-energies, we show that any such system having the same form as those for the ADE TBA's, can be encoded on A, D, E, A/Z2 only. This includes, besides the known ADE diagonal scattering, the set of all SU(2) related magnonic TBA's. We explore this class systematically and find some interesting new massive and massless RG flows. The generalization to classes related to higher rank algebras is briefly presented and an intriguing relation with level-rank duality is signalled
A new family of diagonal ADE-related scattering theories
No full textWe propose the factorizable S-matrices of the massive excitations of the non-unitary minimal model M2,11 perturbed by the operator φ1,4. The massive excitations and the whole set of two particle S-matrices of the theory is simply related to the E8 unitary minimal scattering theory. The counting argument and the thermodynamic Bethe ansatz (TBA) are applied to this scattering theory in order to support this interpretation. Generalizing this result, we describe a new family of non-unitary and diagonal ADE- related scattering theories. A further generalization suggests the magnonic TBA for a large class of non-unitary G⊗G/G coset models (G=Aodd, Dn, E6,7,8) perturbed by φid,id, adj, described by non-diagonal S-matrices. © 1992
BONE TISSUE FORMATION IN RAT VERTEBRAL BODY DURING RECOVERY PHASE FOLLOWING TO A LOW CALCIUM DIET
No full text
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
INTEGRABLE QFT(2) ENCODED ON PRODUCTS OF DYNKIN DIAGRAMS
No full textA large class of Thermodynamic Bethe Ansatz equations governing the Renormalization Group evolution of the Casimir energy of the vacuum on the cylinder for an integrable two-dimensional field theory, can often be encoded on a tensor product of two graphs. We demonstrate here that in this case the two graphs can only be of ADE type. We also give strong numerical evidence for a new large set of Dilogarithm sum Rules connected to ADE × ADE and a simple formula for the ultraviolet perturbing operator conformal dimensions only in terms of rank and Coxeter numbers of ADE × ADE . We conclude with some remarks on the curious case ADE × D
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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