Radius of the Observable Universe in Light-years Is Greater than Its Age
Dec 13, 2015 · The radius of the observable universe is about 46 billion light-years, which is considerably greater than its age of about 14 billion years. The radius of the observable universe is …
Learn Observables in Mathematical Quantum Field Theory
Nov 19, 2017 · The following is one chapter in a series on Mathematical Quantum Field Theory. The previous chapter is 6. Symmetries. The next chapter is 8. Phase space. 7. Observables In this …
States and observables in quantum mechanics • Physics Forums
May 19, 2025 · The discussion focuses on the differences between classical and quantum mechanics regarding the specification of experimental conditions and the determination of system states. In …
The observable and non-observable parts of the Universe
Dec 29, 2019 · Hi, I'm only trying to understand the basic concept. Did the big bang give rise to both observable and non-observable universe? I have been through quite a few source and it seems like …
Is the Universe Finite, or Is It Infinite? - Physics Forums
Mar 16, 2024 · The observable universe refers to the portion of the universe that we can see or detect, limited by the finite time light has traveled since the Big Bang. It has a finite volume.
The Universe vs Observable Universe - Physics Forums
Jan 28, 2018 · After reading the wikipedia article and looking at many other threads on this forum I am still having a hard time understanding the difference between the Observable universe and the entire …
Intro to the Big Bang and Infinity Concepts - Physics Forums
Jan 27, 2018 · In the cosmology section of the Physics Forums, I encountered many Big Bang and related infinity problems. Hence, in this article, I want to explain the Big Bang, the topology of the …
Hermitian operator <=> observable? - Physics Forums
Oct 3, 2012 · My question is about both sides of the same coin. First, does a hermitian operator always represent a measurable quantity? Meaning, (or conversely) could you cook up an operator which …
Expectation of an operator (observable) how to calculate it
Jan 31, 2017 · Hello Forum, I understand that in order to calculate the average of a certain operator (observable), whatever that observable may be that we are interested in, we need to prepare many …
Learn the Physics of Virtual Particles in Quantum Mechanics
Mar 28, 2016 · The word virtual is an antonym to real – unlike the general readership of popular literature on particle physics, the creators of the terminology were well aware that virtual particles are …