Recent questions in Theoretical Physics

+16 votes

0 answers

Why isn't string theory considered a valid physics theory yet?

asked Feb 17, 2023 in Theoretical Physics by Fanny mcSquirter

+12 votes

0 answers

Can you give an example of a field theory which has been experimentally proven to be true?

asked Feb 17, 2023 in Theoretical Physics by panlid

+84 votes

0 answers

Do Einstein's field equations really change the fact that, in the final analysis, massive objects attract each other as Newton said?

asked Feb 17, 2023 in Theoretical Physics by Rafell

+18 votes

0 answers

What is string theory? Is it true that all other scientific theories can be derived from this one single concept of strings?

asked Feb 17, 2023 in Theoretical Physics by EthericSorcerer

+1 vote

0 answers

Given that only subatomic and atomic particles are empirically confirmed to quantum tunnel, why do physicists assume that macroscopic objects can quantum tunnel?

asked Feb 17, 2023 in Theoretical Physics by SolarisVerse

+70 votes

0 answers

Are there any subatomic particles that have never been discovered yet by science but exist according to quantum physics theories?

asked Feb 17, 2023 in Theoretical Physics by NovaDreamer

+6 votes

0 answers

Can an experimental physicist become a theoretical physicist later in life?

asked Feb 17, 2023 in Theoretical Physics by StellarFlare

+137 votes

0 answers

What is the difference between theoretical and experimental science? Why is theoretical science seen as more legitimate than experimental science by some people?

asked Feb 17, 2023 in Theoretical Physics by Dean Worsell

+257 votes

0 answers

Could there be something bigger than the universe - a possible multiverse?

asked Feb 17, 2023 in Theoretical Physics by manassa

+4 votes

0 answers

If physics can solve the problem of quantum gravity, will the "theory of everything" be complete?

asked Feb 17, 2023 in Theoretical Physics by The Happy Builder

+25 votes

0 answers

I learned the first two books of Weinberg's QFT. If I want to study the theory of everything, what should I learn?

asked Feb 17, 2023 in Theoretical Physics by MysticHarmony

+111 votes

0 answers

What is the purpose of the perforated cathode in a discharge tube used for the production of electrons?

asked Feb 16, 2023 in Theoretical Physics by Hammerman99

+18 votes

0 answers

What is the salary for an experimental and theoretical physicist with a PHD in USA?

asked Feb 16, 2023 in Theoretical Physics by Bit Of Advice

+1 vote

0 answers

How can a number raised to a power that has a dimension, like meters or seconds, be intuitively defined?

asked Feb 16, 2023 in Theoretical Physics by cultverifiable

+289 votes

0 answers

How do we define momentum so that massless particles (for instance light) could have momentum? The definition p:=mv doesn't make sense here.

asked Feb 16, 2023 in Theoretical Physics by PlanMan

+9 votes

0 answers

Why is the Standard Model expressed with a Lagrangian instead of a Hamiltonian?

asked Feb 16, 2023 in Theoretical Physics by LuminousMystic

+27 votes

0 answers

What are the arguments against a unified field theory?

asked Feb 16, 2023 in Theoretical Physics by CrystalPulse

+25 votes

0 answers

How does the concept of spontaneous symmetry breaking relate to phase transitions in condensed matter physics?

asked Feb 16, 2023 in Theoretical Physics by Josh.91

+18 votes

0 answers

Is theoretical physics a waste of resources? Could the money and time invested be put towards something more practical?

asked Feb 16, 2023 in Theoretical Physics by techie

+14 votes

0 answers

XD Dongfang said that how to deal with the morbid equation of quantum numbers can best reflect the IQ of a physicist and the degree of mastery of theoretical physics. What do you think?

asked Feb 16, 2023 in Theoretical Physics by demrece

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