Cerca risorse accademiche

In this paper, the model of radial motion of dusty matter for the spherically symmetric case in General Relativity (GR) was developed. The model can be used, in particular, to describe galactic halos of dark matter. The ...

ABSTRACT Tensism is the view that tense is not merely a property of language and the mind (narrowly individuated), but of the world itself. Perspectivalism extends this idea to all perspectival properties be they person ...

We propose an extended General Relativistic formalism with boundary terms included, that describes the dynamics of quantum spinor fields, which can take intermediate values, named (3 + 1) -anyons. In the approach here wo...

We calculate the algebra of constraints for deparametrized general relativity with a space-time filling unstable D-brane for an arbitrary value of tachyon field T. We also propose observables that have vanishing Poisson ...

Relativity theory severely restricts the ability to perform nonlocal measurements in quantum mechanics. Studying such nonlocal schemes may thus reveal insights regarding the relations between these two fundamental theori...

Abstract Physiological interpretations of Systems Biology have made many advances since the Principles of Systems Biology were first published in this journal in 2008. Those advances show that the main principle, Biologi...

We introduce a new scheme based on the marked correlation function to probe gravity using the large-scale structure of the Universe. We illustrate our approach by applying it to simulations of the metric-variation f(R) m...

We present a study of the so called relaxed field equations of general relativity in terms of a decomposition of the metric; which is designed to deal with the notion of particles. Several known results are generalized t...

Foram avaliados os principais índices diastólicos, inclusive a velocidade de propagação mitral (Vp), em 36 cães sadios da raça Boxer, 18 de cada sexo, de idade entre um ano e meio e seis anos. A relação raiz aór...

Understanding the nature of the interaction between the lead(II) ion, Pb2+, and water molecules is crucial to describe the stability and chemical behaviour of structures formed during solvation, as well as theconditions ...

Abstract We investigate the cosmological implications of an extended gravitational framework based on biconnection gravity, constructed from the Schr $$\ddot{\textrm{o}}$$ o ¨ dinger connection and its dual. In this app...

The present paper aims at testing a model to predict personal involvement with a social object which was inspired by the social psychological triangle proposed by Moscovici. The triangle bridges three essential aspects o...

A física, como prática filosófica, designa a escolha de ângulo de abordagem sob o qual é possível perceber características fundamentais da física. Assumimos que os papéis do físico e do filósofo não são tão...

We report the formation of a soliton—termed “event soliton”—in nonlinear photonic spacetime crystals (STCs). In these media, simultaneous spatiotemporal periodic modulation of the dielectric constant generates mi...

Disinformation represents a pressing issue in the context of security and politics in the region (not only) of Central and Eastern Europe. With the conflict in Ukraine, European virtual space was flooded with online medi...

Lensing of gravitational waves (GWs) due to intervening massive astrophysical systems between the source and the observer is an inevitable consequence of the general theory of relativity, which can produce multiple GW ev...

Abstract The exploration of the surrounding world and the universe is an important theme in the legacy of humankind. The detection of gravitational waves is adding a new dimension to this grand effort. What are the funda...

We reassess the capacity for multimessenger inference of AT2017gfo/GW170817 using both kilonova and gravitational wave emission within the context of a recent simulation-based surrogate model for kilonova emission. Indep...

Abstract Single-crystal silicon carbide (SiC) has been widely applied in the military and civil fields because of its excellent physical and chemical properties. However, as is typical in hard-to-machine materials, the g...

Hartree–Fock (HF) and second order perturbation theory (MP2) calculations within the scalar and full relativistic frames were carried out in order to determine the equilibrium geometries and interaction energies betwee...

We investigate if a recently introduced formulation of general relativity on a Weyl-Integrable geometry, contains cosmological solutions exhibiting acceleration in the present cosmic expansion. We derive the general cond...

We present a four-component relativistic approach to describe the effects of the nuclear spin-dependent parity-violating (PV) weak nuclear forces on nuclear spin-rotation (NSR) tensors. The formalism is derived within th...

Social medicalization diminishes or even destroys the population's autonomy regarding disease and healthcare and generates an endless demand on health services. It consists on an important challenge the SUS (Unified Heal...