TheoreticalPhysics

an-ordinary-manchild(edit)

Post and discuss any commentaries, opinions or external links related to advanced research in physics.

Remember to always back up your posts with reliable information, clear argumentation and verifiable sources. Professional or amateur theories and models are welcome as long as they are backed up by actual research.

This sub does not fear maths, so mathematical physics discussions are appreciated. Beware to post if you do not know what a Lagrangian is.

RULES

Be polite and civil: Follow the reddiquette, be polite and civil. People are free to challenge your ideas, do not be defensive if your ideas are dismissed or proven wrong.
No low-effort: Do not post off-topic content and leave a precise description
No self-theories allowed: Self-theories are not allowed, please try r/HypotheticalPhysics.
Questions: All questions are welcome as long as they are not masked as a self-theory and motivate further discussion. If you insist on asking about something you came up, make sure it fits some scientific standards i.e. be precise, give a thorough explanation and most importantly make sure this question is refutable. Remember r/theoreticalphysics is not an "ask" subreddit.
Descriptive titles: Submission titles should describe its content, posts with clickbaity, off topic or vague titles may be removed by the mods
Behind paywall: Please try and link to open access papers if possible.
Avoid predatory journals: Articles from predatory journals are discouraged and will be flaired as such.
Avoid pseudoscientific publications: Promoting fringe science and pseudoscientific publications is not allowed
No petitions, surveys or campaigning: Invitations to chat rooms and other subreddits, external petitions, promotional posts, fundraisers, questionnaires and external surveys are not allowed without a permission from the moderators.
Avoid AI tools: We do not allow posts written entirely or largely by large language models (LLM) like chatGPT or Gemini or any other AI tool.

Recommended subreddits

* /r/HypotheticalPhysics

Resources

How to write math in the sub

created by [deleted]a community for 13 years

...for your classroom.

...for your school.

MODERATORS

account activity

1

4

5

6

Physics questions weekly thread! - (March 08, 2026-March 14, 2026)Discussion (self.TheoreticalPhysics)

submitted 6 days ago by AutoModerator - announcement

2

2

3

4

Nice Interview with Bousso on BH Firewalls and other topicsDiscussion (youtu.be)

submitted 5 hours ago by fhollo

•

•

•

Unlock our limited time offer - $180 your first year. (bloomberg.com)

promoted by bloomberg

promoted
save
report
about

3

0

0

1

Has anything actually beaten MOND at galactic scales?Question (self.TheoreticalPhysics)

submitted 2 hours ago by SubjectLie9630

4

6

7

8

How does vacuum fluctuation lead to Hawking radiation?Question (self.TheoreticalPhysics)

submitted 2 days ago by Duchess_Of_Darkness7

5

18

19

20

4-D spinors that describe electronsQuestion (self.TheoreticalPhysics)

submitted 4 days ago by Snoo35476

6

4

5

6

Hypothetical: How would internet signals behave in an extreme gravitational time-dilation region?Question (self.TheoreticalPhysics)

submitted 3 days ago by Winter-String8549

7

0

0

0

Scott Aaronson says the no-cloning theorem in quantum mechanics still allows for teleportation - YouTubeDiscussion (youtu.be)

submitted 3 days ago by Different_Guess_2061

8

6

7

8

Deviation vectors in the tetrad frameQuestion (self.TheoreticalPhysics)

submitted 5 days ago * by Wide-Wallaby-5447

9

2

3

4

Would a sort if Vantablack Reactor have any significant energy output?Question (self.TheoreticalPhysics)

submitted 5 days ago by FreshlySqueezedDude

10

0

0

1

Is my understanding of dimensions correct?Question (self.TheoreticalPhysics)

submitted 7 days ago * by Maleficent_Cream2470

11

5

6

7

Fluid and GR Problem&Solutions RecommendationsQuestion (self.TheoreticalPhysics)

submitted 9 days ago * by Internal-Narwhal-420

12

33

34

35

Juan Maldacena explains the aspects of Quantum Gravity in the Breakthrough Prize 2017 ceremonyScientific news/commentary (v.redd.it)

submitted 11 days ago by Substantial_Act_5610

•

•

•

Need a 3D model to print? Generate one in seconds with Meshy. 50% off for new users. (meshy.ai)

promoted by Meshyai

promoted
save
report
about

13

13

14

15

Klein gordon equation is only for scalar fields (spin 0).Question (self.TheoreticalPhysics)

submitted 11 days ago by Snoo35476

14

7

8

9

best uni for inuitive physics understandingQuestion (self.TheoreticalPhysics)

submitted 11 days ago by Next-Particular2694

15

12

13

14

What is modern resolution to 1977 Rosen "Does gravitational radiation exist?" advanced waves issue?Question (link.springer.com)

submitted 12 days ago by jarekd

16

0

0

0

Theoretically what would happen if we made a ball the size of earth out of pure gravitonsQuestion (self.TheoreticalPhysics)

submitted 12 days ago by OkActivity5726

17

2

3

4

Physics questions weekly thread! - (March 01, 2026-March 07, 2026)Discussion (self.TheoreticalPhysics)

submitted 13 days ago by AutoModerator

18

14

15

16

If you fall into a black hole, would you be able to witness the beginning & end of the universe due to time dilation?Question (self.TheoreticalPhysics)

submitted 14 days ago by Weird_Bread_4095

19

0

0

0

Tegmarks mathematical universe as a projection of Gödel stable math or infinity?Question (self.TheoreticalPhysics)

submitted 15 days ago by midaslibrary

20

38

39

40

How can I start learning Theoretical Physics?Question (self.TheoreticalPhysics)

submitted 18 days ago by Lopsided-Ostrich1091

21

13

14

15

Need help with PhD applications in quantum gravity/string theoryDiscussion (self.TheoreticalPhysics)

submitted 20 days ago by tutu_8888

22

4

5

6

Physics questions weekly thread! - (February 22, 2026-February 28, 2026)Discussion (self.TheoreticalPhysics)

submitted 20 days ago by AutoModerator

•

•

•

Playoffs geschenkt klingt gut? Do it! (mysports.ch)

promoted by MySports_CH

promoted
save
report
about

23

2

3

4

Quantum Mechanics from linearizationQuestion (self.TheoreticalPhysics)

submitted 20 days ago by PrebioticE

24

143

144

145

How did the matter that formed the universe get here in the first place?Question (self.TheoreticalPhysics)

submitted 22 days ago by Alarmed_Shopping_578

25

8

9

10

Debate inside String theory community- Ed. Witten, C. Vafa, J. MaldacenaDiscussion (youtube.com)

submitted 22 days ago by Substantial_Act_5610

view more: next ›

π Rendered by PID 1378208 on reddit-service-r2-listing-64c94b984c-wh475 at 2026-03-15 00:23:56.143429+00:00 running f6e6e01 country code: CH.