102,161 research outputs found
Fig. 10. Anansi luki n in Gonzalo Giribet
No full textFig. 10. Anansi luki n. sp. Male. (A–F) palp. (A, F) ventral, (B–E) dorsal, (C–D) mesal and (F) ectal views. (G) epiandrous fusules. (Scale bars: (A,C–D) 200 µm, (B) 500 µm, (E–G) 100 µm).Published as part of Ligia R. Benavides, Gonzalo Giribet & Gustavo Hormiga, 2016, Gonzalo Giribet, pp. 1-31 in Cladistics 32 (6) on page 16, DOI: 10.1111/cla.12174, http://zenodo.org/record/19209
Fig. 13. Anansi luki n in Gonzalo Giribet
No full textFig. 13. Anansi luki n. sp. Female. (A–C) epigynum. (A–B) ventral and (C) lateral views. (D) detail of the chelicerae in retrolateral view, showing the two teeth and the conglomerate of pores at the distal end of the chelicerae. (E–G) spinnerets. (E) ALS, (F) PMS, (G) PLS (Scale bars: (A–C) 200 µm, (D–E,G) 10 µm).Published as part of Ligia R. Benavides, Gonzalo Giribet & Gustavo Hormiga, 2016, Gonzalo Giribet, pp. 1-31 in Cladistics 32 (6) on page 19, DOI: 10.1111/cla.12174, http://zenodo.org/record/19209
Iberosiro distylos de Bivort & Giribet 2004
No full text<i>IBEROSIRO DISTYLOS</i> DE BIVORT & GIRIBET, 2004 <p>A single male specimen from Algarve (cave) da Terra da Rolha, Rocha Forte, Serra de Montejunto (Estremadura, Portugal), collected by A. de Barros Machado in April 1941, and deposited at the MNHN (Paris), was described as yet another monotypic Iberian genus (de Bivort & Giribet, 2004). This species constitutes the southernmost distribution of Iberian Cyphophthalmi.</p> <p> With a length of <i>c</i>. 1.4 mm, similar to that of <i>O. lusitanicus</i>, it combines character states observed in <i>Paramiopsalis</i> and <i>Odontosiro</i>. As in <i>Paramiopsalis</i>, <i>I. distylos</i> has the coxa of the second pair of legs fused to the third coxa, a unique trait within the Sironidae. However, it shares with <i>Odontosiro</i> the ozophore position (which is also similar to that of <i>Parasiro</i>), the type of leg ornamentation, and the anal plate that is devoid of modifications.</p> <p>So far the holotype remains the only known specimens for this species, despite a recent visit (May 2008) to the alleged type locality by G. Giribet. However, a male and a female of a congener have</p> <p> 2 Juberthie only mentioned that the specimens were collected in Guimaraes by Coiffat in the North of Portugal. There are two localities in the North of Portugal named Guimarães, one in the Province of Braga, and another in the Province of Viseu.</p> <p>been recently collected by pitfall trapping in Illano (Asturias), and the specimens were forwarded to the authors by C. Prieto after the first set of proofs of this article. These specimens will be described and discussed in a forthcoming paper.</p>Published as part of <i>Murienne, Jérôme & Giribet, Gonzalo, 2009, The Iberian Peninsula: ancient history of a hot spot of mite harvestmen (Arachnida: Opiliones: Cyphophthalmi: Sironidae) diversity, pp. 785-800 in Zoological Journal of the Linnean Society 156 (4)</i> on page 790, DOI: 10.1111/j.1096-3642.2008.00512.x, <a href="http://zenodo.org/record/5443672">http://zenodo.org/record/5443672</a>
Fig. 14. Anansi insidiator n in Gonzalo Giribet
No full textFig. 14. Anansi insidiator n. comb. Male. (A–C) habitus. (A) dorsal, (B) lateral and (C) ventral views. (D) frontal view. (E–H) Palp. (E) retrolateral, (F) dorsal, (G) prolateral and (H) ventral. (I) apical. (J) labium (Scale bars: (A–D) 1 mm, (E–I) 100 µm, J, 200 µm).Published as part of Ligia R. Benavides, Gonzalo Giribet & Gustavo Hormiga, 2016, Gonzalo Giribet, pp. 1-31 in Cladistics 32 (6) on page 20, DOI: 10.1111/cla.12174, http://zenodo.org/record/19209
Fig. 15. Anansi insidiator n in Gonzalo Giribet
No full textFig. 15. Anansi insidiator n. comb. Male. (A) epiandrous fusules. (B–H) palp. (B) retrolateral view, (C) detail of paracymbium, (D) dorsal view, (E) prolateral view, (F) ventral view, (G) retrolateral view showing conductor, (H) detail in ventral view. (I–K) spinnerets. (I) ALS, (J) PMS and (K) PLS (Scale bars: (A, I–K) 10 µm, (B, D-H) 100 µm, (C) 20 µm).Published as part of Ligia R. Benavides, Gonzalo Giribet & Gustavo Hormiga, 2016, Gonzalo Giribet, pp. 1-31 in Cladistics 32 (6) on page 21, DOI: 10.1111/cla.12174, http://zenodo.org/record/19209
Horizon symmetries and hairy black holes in AdS
No full textWe investigate whether supertranslation symmetry may appear in a scenario that involves black holes in AdS space. The framework we consider is massive 3D gravity, which admits a rich black hole phase space, including stationary AdS black holes with softly decaying hair. We consider a set of asymptotic conditions that permits such decaying near the boundary, and which, in addition to the local conformal symmetry, is preserved by an extra local current. The corresponding algebra of diffeomorphisms consists of two copies of Virasoro algebra in semi-direct sum with an infinite-dimensional Abelian ideal. We then reorient the analysis to the near horizon region, where infinite-dimensional symmetries also appear. The supertranslation symmetry at the horizon yields an infinite set of non-trivial charges, which we explicitly compute. The zero-mode of these charges correctly reproduces the black hole entropy. In contrast to Einstein gravity, in the higher-derivative theory subleading terms in the near horizon expansion contribute to the near horizon charges. Such terms happen to capture the higher-curvature corrections to the Bekenstein area law.Fil: Donnay, Laura. Vienna University of Technology; AustriaFil: Giribet, Gaston Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; ArgentinaFil: Oliva, Julio. Universidad de Concepción; Chil
Quantum BMS transformations in conformally flat space-times and holography
No full textWe define and study asymptotic Killing and conformal Killing vectors in d-dimensional Minkowski, (A)dS, ℝ × Sd−1 and AdS2× Sd−2. We construct the associated quantum charges for an arbitrary CFT and show they satisfy a closed algebra that includes the BMS as a sub-algebra (i.e. supertranslations and superrotations) plus a novel transformation we call ‘superdilations’. We study representations of this algebra in the Hilbert space of the CFT, as well as the action of the finite transformations obtained by exponentiating the charges. In the context of the AdS/CFT correspondence, we propose a bulk holographic description in semi-classical gravity that reproduces the results obtained from CFT computations. We discuss the implications of our results regarding quantum hairs of asymptotically flat (near-)extremal black holes.Fil: Donnay, Laura. Vienna University of Technology; AustriaFil: Giribet, Gaston Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; ArgentinaFil: Rosso, Felipe. University of Southern California; Estados Unido
Holographic entropy of Warped-AdS<inf>3</inf> black holes
No full textAbstract: We study the asymptotic symmetries of three-dimensional Warped Anti-de Sitter (WAdS) spaces in three-dimensional New Massive Gravity (NMG). For a specific choice of asymptotic boundary conditions, we find that the algebra of charges is infinite dimensional and coincides with the semidirect sum of Virasoro algebra with non-vanishing central charge and an affine û(1)k Kač-Moody algebra. We show that the WAdS black hole configurations organize in terms of two commuting Virasoro algebras. We identify the Virasoro generators that expand the associated representations in the dual Warped Conformal Field Theory (WCFT) and, by applying the Warped version of the Cardy formula, we prove that the microscopic WCFT computation exactly reproduces the entropy of black holes in WAdS space.SCOPUS: ar.jinfo:eu-repo/semantics/publishe
Addendum to "violating the string winding number maximally in anti-de Sitter space"
No full textWe revisit the computation of maximally winding violating string amplitudes in three-dimensional anti-de Sitter space discussed in Ref. G. Giribet, Violating the string winding number maximally in anti-de Sitter space, Phys. Rev. D 84, 024045 (2011)PRVDAQ1550-799810.1103/PhysRevD.84.024045. Here, we give an alternative derivation of these observables. This derivation, the simplest to the best of our knowledge, follows from identities between spectrally flowed representations of sl^(2)k Kac-Moody algebra and, in contrast to G. Giribet, Violating the string winding number maximally in anti-de Sitter space, Phys. Rev. D 84, 024045 (2011)PRVDAQ1550-799810.1103/PhysRevD.84.024045, it does not resort to conjugate representations with auxiliary fields, but it rather involves the standard Wakimoto free field representation.Fil: Giribet, Gaston Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentin
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