571 research outputs found
String in AdS Black Hole: A Thermo Field Dynamic Approach
Based on Maldacena's description of an eternal AdS-black hole, we reassess
the Thermo Field Dynamics (TFD) formalism in the context of the AdS/CFT
correspondence. The model studied here involves the maximally extended
AdS-Schwarschild solution and two (non-interacting) copies of the CFT
associated to the global AdS spacetime, along with an extension of the string
by imposing natural gluing conditions in the horizon. We show that the gluing
conditions in the horizon define a string boundary state which is identified
with the TFD thermal vacuum, globally defined in the Kruskal extension of the
AdS black hole. We emphasize the connection of this picture with unitary
SU(1,1) TFD formulation and we show that information about the bulk and the
conformal boundary is present in the SU(1,1) parameters. Using the unitary
SU(1,1) TFD formulation, a canonical prescription for calculating the
worldsheet real time thermal Green's function is made and the entropy
associated with the entanglement of the two CFT's is calculated.Comment: 24 pages, no figure
New Insights in the Management of Antipsychotics in the Treatment of Schizophrenia in a Patient with Prolactinoma: A Case Report and Review of the Literature
Prolactinomas are the commonest pituitary adenomas and the major pathological cause of hyperprolactinaemia. Symptomatic prolactinomas are treated mainly by dopamine agonists; surgery and radiotherapy are options for nonresponders. Schizophrenia treatment is based on antipsychotics, which acts mainly at serotonergic and dopaminergic systems. We report a case of a 39-year-old schizophrenic male patient that was diagnosed with a macroprolactinoma 8 years after his first psychotic episode. The association of Schizophrenia and prolactinoma represents a clinical challenge once the treatment of one disease can exacerbate the symptoms of the other
Entanglement from dissipation and holographic interpretation
In this work we study a dissipative field theory where the dissipation process is manifestly related to dynamical entanglement and put it in the holographic context. Such endeavour is realized by further development of a canonical approach to study quantum dissipation, which consists of doubling the degrees of freedom of the original system by defining an auxiliary one. A time dependent entanglement entropy for the vacumm state is calculated and a geometrical interpretation of the auxiliary system and the entropy is given in the context of the AdS/CFT correspondence using the Ryu–Takayanagi formula. We show that the dissipative dynamics is controlled by the entanglement entropy and there are two distinct stages: in the early times the holographic interpretation requires some deviation from classical General Relativity; in the later times the quantum system is described as a wormhole, a solution of the Einstein’s equations near to a maximally extended black hole with two asymptotically AdS boundaries. We focus our holographic analysis in this regime, and suggest a mechanism similar to teleportation protocol to exchange (quantum) information between the two CFTs on the boundaries (see Maldacena et al. in Fortschr Phys 65(5):1700034, arXiv:1704.05333 [hep-th], 2017).Facultad de Ciencias ExactasInstituto de Física La Plat
Efeito de substratos e da idade do porta-enxerto na formação de mudas de cajueiro anão precoce (Anacardium occidentale L.) em tubetes.
O objeto deste estudo foi avaliar o efeito de diferentes substratos e idades do porta-enxertos na formação de mudas de cajueiro anão precoce utilizando tubetes como recipiente.bitstream/item/83521/1/CT1220001.pd
Entanglement from dissipation and holographic interpretation
In this work we study a dissipative field theory where the dissipation process is manifestly related to dynamical entanglement and put it in the holographic context. Such endeavour is realized by further development of a canonical approach to study quantum dissipation, which consists of doubling the degrees of freedom of the original system by defining an auxiliary one. A time dependent entanglement entropy for the vacumm state is calculated and a geometrical interpretation of the auxiliary system and the entropy is given in the context of the AdS/CFT correspondence using the Ryu–Takayanagi formula. We show that the dissipative dynamics is controlled by the entanglement entropy and there are two distinct stages: in the early times the holographic interpretation requires some deviation from classical General Relativity; in the later times the quantum system is described as a wormhole, a solution of the Einstein’s equations near to a maximally extended black hole with two asymptotically AdS boundaries. We focus our holographic analysis in this regime, and suggest a mechanism similar to teleportation protocol to exchange (quantum) information between the two CFTs on the boundaries (see Maldacena et al. in Fortschr Phys 65(5):1700034, arXiv:1704.05333 [hep-th], 2017).Facultad de Ciencias ExactasInstituto de Física La Plat
Efeitos de substratos e da idade do porta-enxerto na formação de mudas de cajueiro anão precoce (Anacardium occidentale l.) em tubetes.
Os objetivos deste estudo sao avaliar os efeitos de diferentes substratoe idades do porta-enxerto na formacao de mudas de cajueriro anao precoce, utilizando como recipiente o tubete.bitstream/CNPAT-2010/5383/1/Pa-074.pd
Rapid diagnosis of coccidioidomycosis by nested PCR assay of sputum
Coccidioidomycosis is a deep infection caused by two dimorphic fungi, Coccidioides immitis and Coccidioides posadasii. Diagnosis of the disease requires culture of suspicious clinical samples on mycological media. However, as these species are virulent pathogens, handling of their cultures is a high-risk activity, and is limited to Biosafety Level 3 laboratories. This study describes the direct detection of C. posadasii DNA in an inappropriate sputum sample by PCR amplification of the highly specific Ag2/PRA antigen gene. the results obtained suggest that direct detection of the Ag2/PRA sequence in sputum is an excellent method for rapid and specific diagnosis of coccidioidomycosis.Fed Univ Ceara, Med Mycol Specialized Ctr, Fortaleza, Ceara, BrazilFed Univ Ceara, Postgrad Program Med Sci, Fortaleza, Ceara, BrazilState Univ Ceara, Postgrad Program Vet Sci, Fortaleza, Ceara, BrazilState Univ Ceara, Dept Sci Biol, Fortaleza, Ceara, BrazilUniversidade Federal de São Paulo, Dept Microbiol Immunol & Parasitol, São Paulo, BrazilUniversidade Federal de São Paulo, Dept Microbiol Immunol & Parasitol, São Paulo, BrazilWeb of Scienc
The role of the CNR1 gene in schizophrenia: a systematic review including unpublished data
Objective: Schizophrenia is a multifactorial disorder. It is known that a combination of extensive multiple common alleles may be involved in its etiology, each contributing with a small to moderate effect, and, possibly, some rare alleles with a much larger effect size. We aimed to perform a systematic review of association studies between schizophrenia (and its subphenotypes) and polymorphisms in the CNR1 gene, which encodes cannabinoid receptors classically implicated in schizophrenia pathophysiology, as well as to present unpublished results of an association study in a Brazilian population. Methods: Two reviewers independently searched for eligible studies and extracted outcome data using a structured form. Papers were retrieved from PubMed and ISI Web of Knowledge using the search term schizophrenia in combination with CNR1 or CB1 or cannabinoid receptor. Twenty-four articles met our inclusion criteria. We additionally present data from a study of our own comparing 182 patients with schizophrenia and 244 healthy controls. Results: No consistent evidence is demonstrated. Conclusion: Some seemingly positive association studies stress the need for further investigations of the possible role of endocannabinoid genetics in schizophrenia.Fundacao de Amparo e Pesquisa do Estado de Sao Paulo (FAPESP) [2010/08968-6, 2011/50740-5, 2011/00030-1]Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)FAPESPCNPqCoordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES)Fundacao SafraFundacao ABADSUniv Fed Sao Paulo UNIFESP, Dept Psiquiatria, Sao Paulo, SP, BrazilUniv Fed Sao Paulo, Lab Interdisciplinar Neurociencias Clin LiNC, Sao Paulo, SP, BrazilIrmandade Santa Casa Misericordia Sao Paulo, Dept Psiquiatria, Sao Paulo, SP, BrazilUniv Fed Sao Paulo, Dept Morfol & Genet, Sao Paulo, SP, BrazilUniv Fed Sao Paulo UNIFESP, Dept Psiquiatria, Sao Paulo, SP, BrazilUniv Fed Sao Paulo, Lab Interdisciplinar Neurociencias Clin LiNC, Sao Paulo, SP, BraziWeb of Scienc
A calmodulin-activated (Ca2+-Mg2+)-ATPase is involved in Ca2+ transport by plasma membrane vesicles from Trypanosoma cruzi
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