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 What is the Fundamental Nature of Location in Physics?
- Simons
- · Replies 1 ·
Graduate Has Sir Michael Atiyah Uncovered New Links Between Arithmetic and Physics?
- mitchell porter
- · Replies 41 ·
Graduate Use of tensor densities in coordinate transformation
- aeson25
- · Replies 3 ·
Undergrad What are the fundamental equations from which all physics can be derived?
- want2graduate
- · Replies 3 ·
Undergrad What is the role of the divergence theorem in deriving local laws in physics?
- dRic2
- · Replies 11 ·
Graduate Is M-Theory more fundamental than String Theory?
- S Beck
- · Replies 4 ·
Graduate Definition of the Lagrangian finite strain tensor
- albus
- · Replies 1 ·
Undergrad Why do we ignore the contribution to a surface integral from the point r=0?
- Mike400
- · Replies 42 ·
High School If there is no multiverse then what is beyond the Universe?
- multiversetheory
- · Replies 4 ·
Graduate Does calculable graviton self-interaction solve quantum gravity's problems?
- Someguyoutthere
- · Replies 5 ·
Undergrad Data analysis for theoretical vs experimental results
- TheBlueDot
- · Replies 3 ·
Undergrad Integral equation for large surfaces
- Apashanka
- · Replies 6 ·
Graduate Why doesn't string theory violate Weinberg's cluster decomposition argument?
- jordi
- · Replies 15 ·
Undergrad Why not a particle for charge?
- Mayank Jately
- · Replies 3 ·
Undergrad Electrostatic in string theory or LQG
- Philipsmett
- · Replies 2 ·
Undergrad Calculating Jacobian Determinant
- Apashanka
- · Replies 1 ·
Undergrad A Quadrillion Standard Models from F-theory arxiv.org/pdf/1903.00009
- Spinnor
- · Replies 2 ·
Graduate Is "Equal a priori Probabilities" the correct scientific approach?
- J-H-C
- · Replies 10 ·
High School What's the status of supersymmetry
- Trollfaz
- · Replies 7 ·
Graduate Vacuum energy in the Wess-Zumino model
- nrqed
- · Replies 1 ·
Undergrad What is the relationship between the Hamiltonian and Lorentz invariance?
- niko_.97
- · Replies 6 ·
Undergrad When should we take numerology seriously?
- ohwilleke
- · Replies 19 ·
Undergrad Spacetime as emergent quantum phenomenon
- Mary Poppins
- · Replies 10 ·
Graduate Are electric charges always projections in Lie group representations?
- arivero
- · Replies 4 ·
High School Significance of the Planck Particle
- Nathan Warford
- · Replies 5 ·
Undergrad Do Classical Physics Still Have Unsolved Problems?
- BWV
- · Replies 3 ·
Undergrad Example of a theory that was right after 20 years of failures?
- Marco Masi
- · Replies 19 ·
Graduate De Sitter Vacua in String Theory and KKLT
- Jeffery Winkler
- · Replies 1 ·
Graduate Current state of loop quantum gravity: successes, failures and open problems
- maline
- · Replies 10 ·
Undergrad Is something wrong with my understanding of Liouville's Theorem?
- fox26
- · Replies 4 ·
High School Does a field with 0 value "exist"?
- black hole 123
- · Replies 6 ·
Undergrad Noether's theorem for discrete symmetry
- Dalor
- · Replies 5 ·
High School Infinities in quantum field theory and general relativity
- Cerenkov
- · Replies 14 ·
Undergrad Back to Muller's 'Now and the Flow of Time'
- asimov42
- · Replies 11 ·
Undergrad The Lagrangian and the second derivative?
- filip97
- · Replies 1 ·
Graduate On the Refined Index of BPS states
- kdv
- · Replies 1 ·
Graduate On non-perturbative renormalization and gravity
- Angel Kld
- · Replies 2 ·
Graduate Quantization isn't fundamental
- Auto-Didact
- · Replies 163 ·
Undergrad What does the phase shift δᵢ represent in Rajaraman's soliton definition?
- Robin04
- · Replies 3 ·
High School Tensor Conventions: V^*⊗V^*⊗V (1,2) vs (2,1)
- fresh_42
- · Replies 2 ·
Graduate PDE: Between Physics and Mathematics
- Auto-Didact
- · Replies 6 ·
Graduate Lagrange Densities: Intuitive Understanding
- Higgsono
- · Replies 1 ·
Undergrad What can we gain/learn by knowing the Higg boson completely?
- seazal
- · Replies 30 ·
Undergrad How to derive Nielsen equation from Lagrange equation?
- AlephClo
- · Replies 4 ·
Undergrad Information Paradox in Black Holes and BSM
- seazal
- · Replies 9 ·
High School Why are we trying to unify all the physical forces?
- Avalon_18
- · Replies 2 ·
Graduate Fine structure and fixed points
- mitchell porter
- · Replies 16 ·
Graduate Non-locality: sheaf cohomology
- Auto-Didact
- · Replies 3 ·
Graduate Can String Theory Explain Fundamental Particles Through Standing Waves?
- alantheastronomer
- · Replies 3 ·
Undergrad Missing 1/4π factor in Green's functions for Poisson equation
- jack476
- · Replies 10 ·
Undergrad What does it mean for momentum components to flow perpendicular to their direction?
- Higgsono
- · Replies 6 ·
Undergrad Volume in phase space- Louviles theorem
- QuasarBoy543298
- · Replies 1 ·
Graduate Foundation of the laws of physics
- Twodogs
- · Replies 12 ·
Graduate Is GR fundamentally different from QM's interpretations?
- MathematicalPhysicist
- · Replies 15 ·
Undergrad ER=EPR baby steps: causation or not?
- nomadreid
- · Replies 3 ·
Undergrad What is the 'formal' definition for Total Derivative?
- SebastianRM
- · Replies 1 ·
Graduate Simulating Quantum Loop Theory: Can S-Knots Be Represented Numerically?
- kroni
- · Replies 3 ·
Graduate Different gauge coupling constants
- Roy_1981
- · Replies 8 ·
Graduate Taxonomy of Theories in Theoretical Physics
- Auto-Didact
- · Replies 6 ·
Undergrad Intuition for why d<p>/dt = -dV(<x>)/dx
- EquationOfMotion
- · Replies 2 ·
Graduate Why do twistors in the amplituhedron have k+4 components?
- nrqed
- · Replies 6 ·
Graduate Rund_Trautman Identity for fields
- PeroK
- · Replies 8 ·
Undergrad Is there any theoretical basis for laws being 2nd order
- Hiero
- · Replies 16 ·
High School Looking for a citation of Nima Arkani-Hamed
- Aidyan
- · Replies 2 ·
High School What is the fundamental nature of matter and energy?
- kolleamm
- · Replies 4 ·
High School Is it possible to stop the graviton?
- Josiah
- · Replies 19 ·
Graduate Quantum Gravity Research Group -- any standing in mainstream Physics?
- andrew s 1905
- · Replies 2 ·
Graduate What Are Examples of Lagrangians in Various Disciplines?
- JTC
- · Replies 5 ·
Undergrad Fundamental equation in string theory
- kent davidge
- · Replies 4 ·
Undergrad Is the composite Higgs still a thing?
- arivero
- · Replies 6 ·
Undergrad Limits of the variatonal principle
- Umaxo
- · Replies 2 ·
Undergrad Is there new LHC data on coupling constant running?
- ohwilleke
- · Replies 1 ·
Undergrad Compatibility of Physics and Abstract Algebra
- TRB8985
- · Replies 2 ·
Graduate Dark Matter and Baryon Asymmetry: Is It Possible?
- kelly0303
- · Replies 4 ·
Graduate Does the unforced quartic oscillator behave chaotically?
- L_landau
- · Replies 3 ·
Undergrad Non-perturbative lattice definition of standard models via grand unification
- atyy
- · Replies 1 ·
Graduate How to publish an alternative gravity theory without quantum verification
- PhDnotForMe
- · Replies 2 ·
Graduate Numerology from Vafa and Visser
- mitchell porter
- · Replies 3 ·
Graduate Status of large higher dimensions
- Anne Ross
- · Replies 2 ·
Undergrad Boltzmann equation and Hamiltonian
- Malamala
- · Replies 2 ·
Undergrad SUSY and GUTs all but eliminated by latest ACME experiment
- MrRobotoToo
- · Replies 5 ·
Graduate Summation Index Notation in the Transformation Equations
- sams
- · Replies 4 ·
Undergrad Mathematical series in physics - Why and when do we need them?
- k.udhay
- · Replies 13 ·
Undergrad Does the Principle of Least Action Have a Physical Meaning?
- crastinus
- · Replies 90 ·
Graduate No metastable type IIB de Sitter vacua
- Urs Schreiber
- · Replies 73 ·
Graduate Chain Rule in Lagrangian Transformation
- SEGFAULT1119
- · Replies 3 ·
Graduate Quantum Gravity -- intro papers for 2nd year MSc student?
- YellowBiro
- · Replies 4 ·
Graduate Does it make sense to break T duality at fundamental level?
- JG11
- · Replies 3 ·
Undergrad Do gravitons have frequency, like photons?
- cuallito
- · Replies 3 ·
Undergrad Why does E=mc² use the speed of light squared rather than another power?
- rootone
- · Replies 5 ·
Graduate Baroque neutrinos and Zee-Babu model
- mitchell porter
- · Replies 1 ·
Undergrad Theories without Fundamental Space and Time
- kiki_danc
- · Replies 50 ·
Undergrad How credible are CKM matrix limits on new physics?
- ohwilleke
- · Replies 4 ·
Undergrad General definition of spatial dimension?
- nomadreid
- · Replies 11 ·
Undergrad Is each path in a phase portrait unique?
- crastinus
- · Replies 2 ·
Undergrad Summation convention with expressions containing parentheses
- emq
- · Replies 3 ·
Undergrad Why do the signs alternate when using Gauss' law for gravity?
- TimeRip496
- · Replies 4 ·
Graduate Nuclear Processes in Other Universes: Varying the Strength of the Weak Force
- jeffery_winkler
- · Replies 1 ·
Undergrad Why is the Lagrangian defined as kinetic minus potential energy?
- sams
- · Replies 8 ·
Graduate Hardy's approach to quantum gravity and QM interpretation
- kith
- · Replies 37 ·