Lyt når som helst, hvor som helst

Nyd den ubegrænsede adgang til tusindvis af spændende e- og lydbøger - helt gratis

  • Lyt og læs så meget du har lyst til
  • Opdag et kæmpe bibliotek fyldt med fortællinger
  • Eksklusive titler + Mofibo Originals
  • Opsig når som helst
Start tilbuddet
DK - Details page - Device banner - 894x1036

Quantum Gravity

6 Anmeldelser

4

Længde
43M
Sprog
Engelsk
Format
Kategori

Fakta

Modern science and physics in particular, primarily consists of two basic theories, namely the general relativity or particle physics and the theory of gravity. There had been great heights scaled by these two theories taken together in the past, since the very beginning. Hence, it’s highly surprising to accept the fact that the overall picture given by these two theories taken together reflects a higher degree of inconsistency. This inconsistency arises mainly after taking into consideration a part of the theory, the standard model, as a quantum theory while the other, gravity, as a classical theory. At a first glance, it may appear that quantizing general relativity may remove the inconsistencies. If one performs an expansion in terms of Feynman diagrams, the technique used in the standard model, then one finds infinities that cannot be absorbed in a renormalization of the Cosmological constant also known as Newton constant.

In fact as one goes to higher and higher orders in perturbation theory one would have to include more and more counter terms. In other words, the theory is not renormalizable. Hence, the most crucial principle in constructing the so called Standard model is not capable to hold firm. What is more surprising to an observer is the fact that an inconsistent theory could fit in so well with the experiments, apparently explaining it flawlessly. What happens is that quantum gravity effects are usually very small due to the weakness of gravity relative to other forces. The effects of gravity are proportional to the energy or mass, so they see a rise in high energies.

© 2020 IntroBooks (Lydbog): 9781987177121

Release date

Lydbog: 11. marts 2020

Tags

Andre kan også lide...

Vælg dit abonnement

  • Over 600.000 titler

  • Download og nyd titler offline

  • Eksklusive titler + Mofibo Originals

  • Børnevenligt miljø (Kids Mode)

  • Det er nemt at opsige når som helst

Flex

For dig som vil prøve Mofibo.

89 kr. /måned
  • 1 konto

  • 20 timer/måned

  • Gem op til 100 ubrugte timer

  • Eksklusivt indhold hver uge

  • Fri lytning til podcasts

  • Ingen binding

Prøv gratis
Den mest populære

Premium

For dig som lytter og læser ofte.

129 kr. /måned
  • 1 konto

  • 100 timer/måned

  • Eksklusivt indhold hver uge

  • Fri lytning til podcasts

  • Ingen binding

Start tilbuddet

Unlimited

For dig som lytter og læser ubegrænset.

149 kr. /måned
  • 1 konto

  • Ubegrænset adgang

  • Eksklusivt indhold hver uge

  • Fri lytning til podcasts

  • Ingen binding

Start tilbuddet

Family

For dig som ønsker at dele historier med familien.

Fra 179 kr. /måned
  • 2-6 konti

  • 100 timer/måned pr. konto

  • Fri lytning til podcasts

  • Kun 39 kr. pr. ekstra konto

  • Ingen binding

2 konti

179 kr. /måned
Prøv gratis