## [download pdf] Accelerating Expansion: Philosophy and Physics with a Positive Cosmological Constant.

### Accelerating Expansion: Philosophy and Physics with a Positive Cosmological Constant by Gordon Belot

Accelerating Expansion: Philosophy and Physics with a Positive Cosmological Constant

Gordon Belot

Page: 240

Format: pdf, ePub, mobi, fb2

ISBN: 9780192866462

Publisher: Oxford University Press

### Books for downloading Accelerating Expansion: Philosophy and Physics with a Positive Cosmological Constant 9780192866462 by Gordon Belot

Accelerating Expansion explores some of the philosophical implications of modern cosmology, focused on the significance that the discovery of the accelerating expansion of the Universe has for our understanding of time, geometry, and physics. The appearance of the cosmological constant in the equations of general relativity allows one to model universes in which space has an inherent tendency towards expansion. This constant, introduced by Einstein but subsequently abandoned by him, returned to centre stage with the discovery of the accelerating expansion. This pedagogically-oriented essay begins with a study of the most basic and elegant relativistic world that involves a positive cosmological constant, de Sitter spacetime. It then turns to the relatives of de Sitter spacetime that dominate modern relativistic cosmology. Some of the topics considered include: the nature of time and simultaneity in de Sitter worlds; the sense in which de Sitter spacetime is a powerful dynamical attractor; the limited extent to which observation can give us information about the topology of space in a world undergoing accelerated expansion; and cosmologists' favourite sceptical worry about the reliability of evidence and the possibility of knowledge, the problem of Boltzmann brains.

**What's the deal with cosmological constant? Does it still**

It is a measure of the energy density of the vacuum of space. The cosmological constant is believed to be responsible for the accelerated expansion of the

**Accelerating Expansion: Philosophy and Physics**

Cover for "Accelerating Expansion: Philosophy and Physics with a Positive Cosmological Constant". Empty Star. No

**Accelerating expansion of the universe**

Within the framework of general relativity, an accelerated expansion can be accounted for by a positive value of the cosmological constant Λ, equivalent to the

**Belot-A: Books**

Accelerating Expansion: Philosophy and Physics with a Positive Cosmological Constant. by Prof Gordon Belot. Hardcover. $80.00$80.00. FREE delivery. Other format

**The Puzzle of Dark Energy**

A third option may account for cosmic acceleration: there is no dark energy, and the quickening expansion of the universe results from physics not explained by

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