Energy of Photons in Expanding Spacetime: Comparing FLRW and Conformal Cosmology Metrics

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F25%3A10506960" target="_blank" >RIV/00216208:11310/25:10506960 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=sGCNKw4qUB" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=sGCNKw4qUB</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/galaxies13050100" target="_blank" >10.3390/galaxies13050100</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Energy of Photons in Expanding Spacetime: Comparing FLRW and Conformal Cosmology Metrics

Popis výsledku v původním jazyce

We investigate the behaviour of photons in Riemann spacetime, focusing on how their velocity and energy are affected by cosmic expansion. Specifically, we examine the differences in energy conservation depending on the cosmological model. Our findings indicate that photons exhibit fundamentally different behaviour based on the chosen metric. In the standard Lambda CDM model, which relies on the Friedmann-Lemaître-Robertson-Walker (FLRW) metric, the energy conservation law for redshifted photons is violated. However, in a cosmological model based on the conformal cosmology (CC) metric, this law remains valid. The CC metric offers additional advantages, as it accurately reproduces the cosmological redshift, cosmic time dilation observed in Type Ia supernova light curves, and flat galaxy rotation curves without requiring the introduction of dark matter. These findings underscore the potential significance of the CC metric in cosmological applications.

Název v anglickém jazyce

Energy of Photons in Expanding Spacetime: Comparing FLRW and Conformal Cosmology Metrics

Popis výsledku anglicky

We investigate the behaviour of photons in Riemann spacetime, focusing on how their velocity and energy are affected by cosmic expansion. Specifically, we examine the differences in energy conservation depending on the cosmological model. Our findings indicate that photons exhibit fundamentally different behaviour based on the chosen metric. In the standard Lambda CDM model, which relies on the Friedmann-Lemaître-Robertson-Walker (FLRW) metric, the energy conservation law for redshifted photons is violated. However, in a cosmological model based on the conformal cosmology (CC) metric, this law remains valid. The CC metric offers additional advantages, as it accurately reproduces the cosmological redshift, cosmic time dilation observed in Type Ia supernova light curves, and flat galaxy rotation curves without requiring the introduction of dark matter. These findings underscore the potential significance of the CC metric in cosmological applications.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Galaxies

ISSN

2075-4434

e-ISSN

2075-4434

Svazek periodika

13

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

11

Strana od-do

100

Kód UT WoS článku

001601550600001

EID výsledku v databázi Scopus

2-s2.0-105020050274