books.google.com - This book is an introductory text in General Relativity, while also focusing some solutions to the cosmological constant problem, which consists in an amazing 100 orders of magnitude discrepancy between the value of this constant in the present Universe, and its estimated value in the very early epoch....https://books.google.com/books/about/Introduction_to_General_Relativity_and_t.html?id=wmeF7AVS82AC&q=entropy&utm_source=gb-gplus-shareIntroduction to General Relativity and the Cosmological Constant Problem

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## Introduction to General Relativity and the Cosmological Constant ProblemBy Marcelo Samuel Berman |