ISSN : 2583-939X
Edward Bormashenko
World Jour. of Phys., 1 (2):79-86
Edward Bormashenko : Chemical Engineering, Biotechnology and Materials Department, Faculty of Engineering, Ariel University, P.O.B. 3, Ariel 40700, Israel
DOI: 10.56439/WJP/2023.1109
Article History: Received on: 16-Sep-23, Accepted on: 12-Oct-23, Published on: 14-Oct-23
Corresponding Author: Edward Bormashenko
Email: edward@ariel.ac.il
Citation: Edward Bormashenko (2023). Jeans Instability, Jeans Entropy, and the Entropy Origin of Gravity. World Jour. of Phys., 1 (2 ):79-86
An entropic origin of gravity
is re-visited. Isothermal self-gravitating clouds seen as an ideal gas are
analyzed. Gravitational attraction within the isothermal cloud in equilibrium
is balanced by the pressure, which is of a pure entropic nature. The notion of
the Jeans entropy of the cloud corresponding to the entropy of the
self-gravitating cloud in mechanical and thermal equilibrium is introduced. Balance
of the gravitational compression and the entropic repulsion yields the scaling
relation hinting to the entropic origin of the gravitational force. The
analysis of the Jeans instability enables elimination of the “holographic
screen” or “holographic principle” necessary for grounding of the entropic
origin of gravity.