We study fluid distributions endowed with hyperbolic symmetry, which share many common features Lemaitre–Tolman–Bondi (LTB) solutions (e.g., they are geodesic, shearing, and nonconformally flat, the energy density is inhomogeneous). As such, may be considered as symmetric versions of LTB, spherical symmetry replaced by symmetry. start considering pure dust models, afterwards, we extend our anal...

Jacob Biamonte, 2, ∗ Mauro Faccin, † and Manlio De Domenico ‡ Quantum Complexity Science Initiative Department of Physics, University of Malta, MSD 2080 Malta Institute for Quantum Computing, University of Waterloo, Waterloo, N2L 3G1 Ontario, Canada ICTEAM, Université Catholique de Louvain, Euler Building 4, Avenue Lemaitre, B-1348 Louvain-la-Neuve, Belgium Departament d’Enginyeria Informàtica ...

V. D. Blondel Department of Mathematical Engineering University of Louvain Avenue Georges Lemaitre, 4 B-1348 Louvain-la-Neuve Belgium Email: [email protected] J. Cassaigne Institut de Mathématiques de Luminy UPR 9016 Campus de Luminy, Case 907 13288 Marseille Cedex 9 France Email: [email protected] J. Karhumäki Dept. of Math. & TUCS University of Turku FIN-20014 Turku Finland Email: ...

We obtain a scaling relation for spherically symmetric k-essence scalar fields $\phi(r,t)$ an inhomogeneous cosmology with the Lemaitre-Tolman- Bondi (LTB) metric. show that this reduces to known homogeneous when LTB metric Friedmann-Lemaitre-Robertson-Walker (FLRW) under certain identifications of functions. A lagrangian is set up and Euler-Lagrangian equations solved assuming $\phi(r,t)=\phi_...

Drosophila responds to a septic injury by the rapid synthesis of antimicrobial peptides. These molecules are predominantly produced by the fat body, a functional equivalent of mammalian liver, and are secreted into the hemolymph where their concentrations can reach up to 100 pM. Six distinct antibacterial peptides (plus isoforms) and one antifungal peptide have been characterized in Drosophila ...

We show the existence of spatially homogeneous but anisotropic cosmological models whose cosmic microwave background temperature is exactly isotropic at one instant of time but whose rate of expansion is highly anisotropic. The existence of these models shows that the observation of a highly isotropic cosmic microwave background temperature cannot alone be used to infer that the universe is clo...