Singularitățile ca limite ontologice ale relativității generale

Sfetcu, Nicolae Singularitățile ca limite ontologice ale relativității generale., 2018 [Preprint]

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English abstract

The singularities reached in general relativity by solving Einstein's equations have been and still are the subject of numerous scientific debates: Do singularities exist or not? Was the Big Bang an initial singularity? If singularities exist, what is their ontology? Is general relativity a theory that has shown its limits in this case? There are singularities, and general relativity, like any other scientific theory today, is not valid within the event horizon. But this does not mean, as some scientists believe, that it should be considered obsolete. After a brief presentation of the specific aspects of the classical Newtonian theory and the special theory of relativity, and a brief presentation of the general theory of relativity, in the Ontology of General Relativity chapter I present the specific ontological aspects of general relativity. The next chapter, Singularities, is devoted to presenting singularities that result in general relativity, specific aspects of black holes, and event horizons, including the debate about the Big Bang as the original singularity, and the arguments for the existence of singularities. In Ontology of Singularities I talk about the possibilities of ontological framing of singularities in general and black holes in particular, about the hole argument put forward by Einstein, and the arguments presented by scientists that there are no singularities and therefore that the general theory of relativity is at a standstill . I conclude with the Conclusions in which I briefly state and resume the arguments that support my views presented above.

Romanian abstract

Singularitățile la care se ajunge în relativitatea generală prin rezolvarea ecuațiilor lui Einstein au fost și încă mai sunt subiectul a numeroase dezbateri științifice: Există sau nu, singularități? Big Bang a fost o singularitate inițială? Dacă singularitățile există, care este ontologia acestora? Este teoria generală a relativității o teorie care și-a arătat limitele în acest caz? Există singularități, iar teoria generală a relativității, ca de altfel oricare altă teorie științifică din prezent, nu este valabilă în interiorul orizontului evenimentelor. Dar asta nu presupune, așa cum consideră unii oameni de știință, că ea trebuie considerată ca fiind perimată. După o scurtă prezentare a aspectelor specifice din teoria clasică newtoniană și teoria specială a relativității, și o scurtă prezentare a teoriei generale a relativității, în capitolul Ontologia relativității generale prezint aspectele ontologice specifice relativității generale. Următorul capitol, Singularități, este dedicat prezentării singularităților care rezultă în relativitatea generală, a aspectelor specifice ale găurilor negre și orizontul evenimentelor, inclusiv dezbaterea despre Big Bang ca singularitate inițială, și argumentele în favoarea existenței singularităților. În Ontologia singularităților vorbesc despre posibilitățile de încadrare ontologică a singularităților în general și a găurilor negre în special, despre argumentul găurii pus în evidență de Einstein, și argumentele prezentate de oamenii de știință că nu există singularități și deci că teoria generală a relativității este în impas. Închei cu Concluziile în care expun și reiau pe scurt argumentele care îmi susțin opiniile prezentate mai sus.

Item type: Preprint
Keywords: relativitatea generală, teoria general a relativității, Albert Einstein, singularități, găuri negre, orizontul evenimentelor, Big Bang, cosmologie, gravitație
Subjects: D. Libraries as physical collections. > DI. Science libraries.
Depositing user: Nicolae Sfetcu
Date deposited: 29 Jun 2023 09:24
Last modified: 29 Jun 2023 09:24
URI: http://hdl.handle.net/10760/44530

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