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International Year of Physics
(Daily Express, 2005-03)
This article applauds the declaration of 2005 as the International Year of Physics by the United Nations General Assembly, and hopes that the observance will help all concerned to explore ways of shifting the physics ...
Physical Exercise and Its Effects on Alzheimer's Disease
(2017-01-04)
Physical exercise has frequently been the target of research studies related to the treatment of Alzheimer's disease. The level and routine of physical exercise can influence the progression of the disease, as well as ...
Charged Proca stars
(2016)
The costs of physical inactivity in the world: a general review
(Abrasco, 2016-04-01)
There is convincing evidence in the scientific literature of the effectiveness of regular physical activity and physical exercise in the conservation of health and the prevention of various ailments. However, studies into ...
On the computational complexity of ising spin glass models
(1982)
In a spin glass with Ising spins, the problems of computing the magnetic partition function and finding a ground state are studied. In a finite two-dimensional lattice these problems can be solved by algorithms that require ...
Numerical analysis of Dicke’s model for one atom
(1982)
Using the Green function technique, the authors calculate the transition probability amplitude for one atom interacting with a one-mode electromagnetic field, without assuming the rotating-wave approximation (RWA). The ...
The construction of a Poisson structure out of a symmetry and a conservation law of a dynamical system
(1996)
A method to construct Hamiltonian theories for systems of both ordinary and partial differential equations is presented. The knowledge of a Lagrangian is not at all necessary to achieve the result. The only ingredients ...
Evolution of the ageing process, quality of life and physical fitness in western countries
It is predicted that life expectancy will raise sharply in future stages, especially in western countries. In fact, life
expectancy of developed countries is currently over the age of 70. Aging implies a series of ...
General exact solution for homogeneous time-dependent self-gravitating perfect fluids
(1990)
A procedure to obtain the general exact solution of Einstein equations for a self-gravitating spherically symmetric static perfect fluid obeying an arbitrary equation of state is applied to time-dependent Kantowski-Sachs ...