7 Questions 41 Answers 0 Followers
Questions related from Bernard Lavenda
The Friedmann model of the universe forms the basis of the Standard Model. Yet, it is usually considered not as a pair of evolution equations, but, rather, a condition where the Hubble parameter...
29 June 2017 7,359 1 View
The thermal equation of state p=w e, where w is the ratio of the pressure, p, to the internal energy density, e, would identify it as the latter. If that were the case w would vary between 1/3 for...
30 April 2013 5,143 1 View
In every textbook on cosmology, with the exception of Robertson and Noonan, "Relativity and Cosmology" and "A New Perspective in Relativity", the square of the radial coordinate is taken to be...
23 April 2013 9,713 23 View
The conclusion is based upon a look-a-like appearance between the frequency spectrum of an exponential frequency shift due to acceleration. Although the frequency shift should be due to a uniform...
20 April 2013 5,188 27 View
The so-called Unruh temperature follows from an incorrect equivalence between the phase of the wave function as being given by the ratio of the classical action to Planck's constant and the...
24 March 2013 5,504 10 View
From its thermodynamic definition, a negative pressure would cause the volume to contract in order for the entropy to increase.
20 March 2013 4,442 15 View
Friedmann, "On the curvature of space" (1922) and "On the possibility of a world with constant negative curvature" (1924), chose a hyperbolic line element in which the spatial part was the...
01 January 1970 9,462 4 View