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42 papers · 1 filter
Network Information Flow in Small World Networks
Rui A. Costa, Joao Barros
Recent results from statistical physics show that large classes of complex networks, both man-made and of natural origin, are characterized by high clustering properties yet striki…
Scaling of cosmological domain wall networks with junctions
P. P. Avelino, C. J. A. P. Martins, J. Menezes +2
We describe the results of the largest and most accurate three-dimensional field theory simulations of domain wall networks with junctions. We consider a previously introduced clas…
Probing the close environment of massive young stars with spectro-astrometry
J. M. C. Grave, M. S. N. Kumar
Aims: We test the technique of spectro-astrometry as a potential method to investigate the close environment of massive young stars. Method: Archival VLT near infrared K band spect…
A gravito-electromagnetic analogy based on tidal tensors
L. Filipe Costa, Carlos A. R. Herdeiro
We propose a new approach to a physical analogy between General Relativity and Electromagnetism, based on tidal tensors of both theories. Using this approach we write a covariant f…
Eikonal Approximation in AdS/CFT: Conformal Partial Waves and Finite N Four-Point Functions
Lorenzo Cornalba, Miguel S. Costa, Joao Penedones +1
We introduce the impact-parameter representation for conformal field theory correlators of the form A ~ < O_1 O_2 O_1 O_2 >. This representation is appropriate in the eikonal kinem…
Coisotropic embeddings in Poisson manifolds
A. S. Cattaneo, M. Zambon
We consider existence and uniqueness of two kinds of coisotropic embeddings and deduce the existence of deformation quantizations of certain Poisson algebras of basic functions. Fi…