104 citations
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gr-qc2024
Positive Mass in General Relativity Without Energy Conditions
Níckolas de Aguiar Alves, Andre G. S. Landulfo, Bruno Arderucio Costa
A long-standing problem in physics is why observed masses are always positive. While energy conditions in quantum field theory can partly answer this problem, in this paper we find…
gr-qc2024★ 1 cited
Is the Page-time paradox paradoxical?
Bruno Arderucio Costa
I discuss how five reasonably sounding assumptions lead to a dilemma -- the Page-time paradox -- , which appears to challenge a conventional statistical mechanical underpinning of…