Join expert and advanced topics on beyond the standard model of physics. This includes professionally researched theories like strings, branes, and LQG. Mainstream physics only.
Threads
Graduate Green's function + method of images
- MMS
- · Replies 3 ·
Graduate Why must the boundary term in the Euler-Lagrange derivation vanish?
- TimeRip496
- · Replies 4 ·
Graduate A firewall confusion related to disentangling the vacuum
- S.Daedalus
- · Replies 2 ·
Graduate How many orthogonal spins can an object have?
- onethatyawns
- · Replies 7 ·
Graduate How quantizable matter gravitates
- friend
- · Replies 8 ·
Graduate Born-Oppenheimer applied to quantum geometry
- marcus
- · Replies 2 ·
Graduate Are Constraints Necessary in Hamiltonian Dynamics?
- oldspice1212
- · Replies 2 ·
Graduate Lagrangian invariance, short question
- Coffee_
- · Replies 16 ·
Graduate String Theory Instantaneous Teleportation
- philipp2020
- · Replies 6 ·
Graduate Extending dualities to trialities in matrix models
- marcus
- · Replies 52 ·
Graduate Lack of physical understanding of Noether's theorem
- Coffee_
- · Replies 10 ·
Graduate Alternative Ways of Decreasing Entropy in CCC
- twistor
- · Replies 2 ·
Graduate How do string theory's extra dimensions fit with Lorentz covariance?
- Khashishi
- · Replies 2 ·
Graduate Derivatives in 3D and Dirac Delta
- UVCatastrophe
- · Replies 2 ·
Graduate Pentagons, hexagons, quantum gravity, AdS/CFT
- mitchell porter
- · Replies 3 ·
Graduate Why is the Number 3 So Prevalent in our Universe?
- Wolfman29
- · Replies 8 ·
Graduate Bosonic Strings and their Verma modules
- Korybut
- · Replies 1 ·
Graduate Can I substitute the new coordinates in the old hamiltonian?
- Coffee_
- · Replies 2 ·
Graduate Do the Euler-Lagrange equations hold for a time-dependent V?
- Coffee_
- · Replies 4 ·
Graduate Is the graviton the only thing to find in LQG?
- MTd2
- · Replies 31 ·
Graduate Planck Stars and GR black and white holes
- wabbit
- · Replies 4 ·
Graduate Is There an Intrinsic Weight to Entanglement in Quantum Systems?
- Borek
- · Replies 13 ·
Graduate Correspondence between particle and string vibration mode
- Blackberg
- · Replies 19 ·
Graduate Obtain Equation Using Hamilton's Principle
- Last-cloud
- · Replies 2 ·
Graduate Stress tensor from action in Landau-Ginzburg field theory
- ChrisPhys
- · Replies 5 ·
Graduate E-L equations only hold for independent variables?
- Coffee_
- · Replies 4 ·
Graduate Why do negative energy solutions cause issues in Padmanabhan's Gravitation?
- ShayanJ
- · Replies 1 ·
Graduate How can I know when the Lagrange multiplier is a constant?
- Coffee_
- · Replies 9 ·
Graduate Markopoulou geometrogenesis planck similar to LQG?
- Edward Wij
- · Replies 2 ·
Graduate Green's function? Physical interpretation?
- umerfarooque
- · Replies 4 ·
Graduate What is the impact of the refutation of "quantum foam"?
- sshai45
- · Replies 6 ·
Graduate Experimental proof of Unruh Effect
- Edward Wij
- · Replies 6 ·
Graduate Is the wave function the invariant thing?
- friend
- · Replies 12 ·
Graduate Taking the time derivative of a curl
- nabeel17
- · Replies 1 ·
Graduate Quantum entanglement and multiple dimensions
- theangrycanary
- · Replies 3 ·
Graduate Does Poincaré Recurrence Theorem conflict with the Fluctuation Theorem?
- Jimster41
- · Replies 7 ·
Graduate Does string theory derive relativity from shared mathematical foundations?
- Teichii492
- · Replies 1 ·
Graduate Integral Operation: Why Does nηIJ Vanish?
- moriheru
- · Replies 4 ·
Graduate Connection between number theory, algebra and string theory
- audire
- · Replies 2 ·
Graduate Can Quantum Gravity Allow Spacetime and Matter to Interchange?
- lucas_
- · Replies 2 ·
Graduate Molecular Modeling of Fluid Mechanics
- Ben Johnson
- · Replies 2 ·
Graduate Using KAM theorem to find perturbation threshold for chaos
- xdrgnh
- · Replies 1 ·
Graduate Six themes for QG in 2015 (developments to watch for)
- marcus
- · Replies 37 ·
Graduate The Falling Plate Paradox: Does Gravity or Perfect Vacuum Have More Force?
- loddie
- · Replies 6 ·
Graduate On the origin of fermionic field
- kroni
- · Replies 8 ·
Graduate Where to get started in Loop Quantum Gravity?
- Leucippus
- · Replies 25 ·
Graduate Generating function and Lagrangian invariance
- Coffee_
- · Replies 4 ·
Graduate Canonical transformations, poisson brackets
- Coffee_
- · Replies 1 ·
Graduate 2 theories, same experimental predictions, can one fail but
- Silber5
- · Replies 4 ·
Graduate Combining 4 Forces: What You Need to Prove Theory
- naqibpeace
- · Replies 4 ·
Graduate What is the opposite of a field theory?
- resurgance2001
- · Replies 3 ·
Graduate Has LQG Research Yielded Any Mathematical Breakthroughs?
- Macuario
- · Replies 5 ·
Graduate What Exists Between Universes in the Multiverse Theory?
- akshaya
- · Replies 7 ·
Graduate Is the Hubble Constant Linked to the Second Law of Thermodynamics?
- Jimster41
- · Replies 47 ·
Graduate The Warp Drive Problem: Can Negative Energy/Matter Exist?
- Mrwheatable
- · Replies 1 ·
Graduate Self-dual black holes and Planck stars in loop quantum gravity
- wabbit
- · Replies 9 ·
Graduate Is Everything in Physics Just a Collection of Properties?
- student34
- · Replies 3 ·
Graduate Does the Monster Group appear in String Theory?
- nuclearhead
- · Replies 2 ·
Graduate Twice of supersymmetric transformation = translation
- wphysics
- · Replies 12 ·
Graduate Gravity as a particle-based force vs space-time warping
- Cobalt101
- · Replies 6 ·
Graduate Identifying conserved quantities using Noether's theorem
- Snydes
- · Replies 5 ·
Graduate Is There a Link Between Octononionic Gravitation and the Search for Gravitons?
- member 11137
- · Replies 7 ·
Graduate Buckingham-Pi for "algorithmic" non-dimensionalization
- sysidentify
- · Replies 2 ·
Graduate Physical applications of Riemann zeta function
- vancouver_water
- · Replies 9 ·
Graduate Classical field theory, initial and boundary conditions
- Coffee_
- · Replies 1 ·
Graduate CC Problem Beyond the Standard Model
- lucas_
- · Replies 1 ·
Graduate Where is sum of divergent series used in physics?
- Sinisa
- · Replies 2 ·
Graduate Is the Origin of Time at the Bounce in LQC a Solution to the Entropy Problem?
- wabbit
- · Replies 4 ·
Graduate Can a locally non-special place emit Hawking radiation from a black hole?
- wabbit
- · Replies 6 ·
Graduate Black holes are the shadows of 4D objects (idea)
- stephog
- · Replies 1 ·
Graduate The Theory of Everything (string theory)
- Gbl911
- · Replies 31 ·
Graduate Orthogonality of Sturm-Liouville eigenvectors with degenerate eigenvalues
- mjordan2nd
- · Replies 2 ·
Graduate Infinitesimal transformations and Poisson brackets
- JonnyMaddox
- · Replies 1 ·
Graduate LQG and black holes -- back to basics
- naima
- · Replies 3 ·
Ed Witten Interview: Nobel-Winning Physicist on String Theory
- John86
- · Replies 1 ·
Graduate Why is zero first variation a necessary condition for extremum?
- Agrasin
- · Replies 6 ·
Graduate Can Holometer Null Result falsify LQG?
- Edward Wij
- · Replies 28 ·
Graduate Understanding Particle Interactions with Scalar and Vector Fields
- webb202
- · Replies 3 ·
Graduate Information as fundamental principle in quantum mechanics and gravity
- rumborak
- · Replies 80 ·
Graduate Haggard Rovelli thermodynamics paper says what time is
- marcus
- · Replies 46 ·
Undergrad Do we have any idea what would happen at theoretical absolute zero?
- psuedoben
- · Replies 4 ·
Graduate ADS/CFT Correspondense question
- incompetence123
- · Replies 21 ·
Undergrad Books for deriving old physical formulas
- ancientlord
- · Replies 1 ·
Graduate Degree of freedom of gravitino
- shooride
- · Replies 3 ·
Graduate Holographic Principle question
- incompetence123
- · Replies 13 ·
Graduate Fourier coefficients in string theory
- moriheru
- · Replies 2 ·
Graduate Open problems in quantum gravity and learning theoretical physics
- TimeRip496
- · Replies 1 ·
Graduate Dark matter -- particles or modified gravity?
- copernicus1
- · Replies 3 ·
Graduate Why must string worldsheets have timelike tangent vectors?
- Dixanadu
- · Replies 17 ·
Graduate Could gravity be a fictitious force from accelerating expansion?
- Vree
- · Replies 10 ·
Graduate Derivatives with respect to a Supernumber?
- "pi"mp
- · Replies 19 ·
Graduate SUSY N=1 masless supermultiplet
- Jesus
- · Replies 1 ·
Graduate How to check theoretical point of view
- Saturnine
- · Replies 11 ·
Graduate String theory and the M theory?
- Nick V
- · Replies 1 ·
Undergrad Why are spacetime coordinates dimensions but mass and charge are not?
- wubs23
- · Replies 7 ·
Graduate Scale Symmetry: Resources, People, History
- Digitalism
- · Replies 4 ·
Graduate Virtual gravity versus Earth gravity in spacetime acceleration theories
- Gitirana
- · Replies 3 ·
Graduate Axiomatic postulates vs. experimental derivation.
- TRB8985
- · Replies 5 ·
Graduate Is the gravitational constant actually a variable?
- Luis Ochoa
- · Replies 1 ·