Beyond the Standard Models Forum

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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.
Undergrad From a false vacuum to a true vacuum?
  • Suekdccia
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Undergrad Measuring Spacing with Shortcut Technique: Is Uniformity Achieved?
  • erobz
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High School Why can't gravity be just a form of magnetic attraction?
  • mamba76
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Undergrad String theory calculation of Extremal black hole entropy problem
  • kodama
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Undergrad Coleman Lecture: Varying E-M Lagrangian - Problem 3.1 Explained
  • Pnin
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Graduate An ab initio Hilbert space formulation of Lagrangian mechanics
  • andresB
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Undergrad Alternate expressions for the uncertainty propagation
  • AndersF
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High School Understanding the Concept of Infinity as a Reference in Physics: Explained
  • Nader AbdlGhani
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High School Does the quantum vacuum have information?
  • microatx
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High School Energy: Abstract Concept or Entity?
  • Maurice Morelock
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Undergrad Changing or breaking the most fundamental laws and symmetries?
  • Suekdccia
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Undergrad Time derivative of the moment of inertia tensor
  • George Keeling
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Undergrad Spin Foam models in Loop Quantum Gravity
  • asimov42
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Undergrad A new concept in Low Mass Dark Matter detection
  • Oldman too
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Undergrad A new approach to the information Paradox
  • Oldman too
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Undergrad Explaining the Hierarchy problem for beginners
  • eiyaz
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Undergrad Possible universes as in Modal Logics
  • MathematicalPhysicist
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Graduate Help with identifying a reference for the time-invariant Kaluza-Klein metric
  • user1139
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Graduate Calmet & Hsu: Quantum hair and black hole information
  • atyy
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Graduate Is the Higgs really not as heavy as we thought?
  • fresh_42
  • · Replies 5 ·
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Undergrad Coefficients in expansions of a vector potential
  • Haorong Wu
  • · Replies 6 ·
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Graduate SO(3) group, Heisenberg Hamiltonian
  • LagrangeEuler
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Graduate Gradient of higher rank tensor
  • chowdhury
  • · Replies 30 ·
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Graduate Lagrange-D’Alembert Principle and random ODE
  • wrobel
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Undergrad Canonical transformation vs symplectomorphism
  • lriuui0x0
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Undergrad Between a Zeptometer and the Planck length
  • PEGELLA
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Undergrad Building Quantum GR out of quantum rulers and quantum clocks
  • cuallito
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Undergrad Looking for a Comprehensive Explanation of Natural Units
  • crhurley
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Undergrad What Are the Empirical Challenges Facing Quantum Gravity Theories?
  • ohwilleke
  • · Replies 105 ·
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Undergrad Understanding Tensors & Knot Theory in Physics
  • lekh2003
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Undergrad The partial time derivative of Hamiltonian vs Lagrangian
  • erore
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High School Current status of Horava Lifshitz gravity?
  • windy miller
  • · Replies 5 ·
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Graduate Grant for Research in Theoretical Physics
  • avpol
  • · Replies 14 ·
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Undergrad Do extra dimensions lead to expansion of our universe?
  • Trollfaz
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Undergrad Lagrangian with generalized positions
  • Heidi
  • · Replies 32 ·
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Undergrad Standard designation for generalization of Euler-Lagrange?
  • nomadreid
  • · Replies 5 ·
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Graduate Can Membrane Field Theory Elucidate M-Theory?
  • Julius H
  • · Replies 9 ·
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Graduate Percentage of String Theory Research in Theoretical Physics
  • Maximise24
  • · Replies 11 ·
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Undergrad Swampland Conjecture: String Theory & Unstable Universes
  • Trollfaz
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Undergrad Action in Lagrangian Mechanics
  • Dario56
  • · Replies 5 ·
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Undergrad What Shapes Can Extra Dimensions Take in String Theory?
  • Trollfaz
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Graduate What possible experiments will falsify String Theory?
  • MathematicalPhysicist
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Undergrad Is quantum gravity still an immensely popular field?
  • MacMac
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Undergrad What is your opinion about Freeman Dyson's opinion on the unification?
  • LCSphysicist
  • · Replies 16 ·
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Undergrad Dimensions of our physical world
  • LightningInAJar
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Undergrad Can configuration space be observer independent?
  • lriuui0x0
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Graduate What are the key contributions of Chris Isham to theoretical physics?
  • George Jones
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High School LHCb results and MicroBooNE results
  • valenumr
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Graduate Is the self-consistency principle a scientific or philosophical idea?
  • Spathi
  • · Replies 30 ·
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Undergrad Confusion between vector components, basis vectors, and scalars
  • e2m2a
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High School Is Energy Defined by Shape or Matter in General Relativity?
  • LightningInAJar
  • · Replies 18 ·
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Undergrad Metrics and conformal transformations
  • FuzzySphere
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Graduate Stationary Point of Variation of Action
  • Trying2Learn
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Graduate Euler Lagrange and the Calculus of Variations
  • Trying2Learn
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Graduate What is k-Minkowski spacetime, and is it a tool in a theory of quantum gravity?
  • nomadreid
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Undergrad Playing with Lagrangian and I screw up
  • Trying2Learn
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Undergrad Where does Hamilton's Principle come from?
  • PhilipsPhysics
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Undergrad Current progress in quantum gravity?
  • Haorong Wu
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Graduate Can Gödel's Theorem Inform Our Understanding of Physical Reality?
  • Giulio Prisco
  • · Replies 19 ·
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Graduate Can holography provide a complete description of a space-time?
  • Heidi
  • · Replies 4 ·
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High School Difference between LQC and Causal Sets
  • windy miller
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Undergrad Benefits of Lagrangian mechanics with generalised coordinates
  • lriuui0x0
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Graduate Doubt in a step while deriving Bertrand theorem
  • Kashmir
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Undergrad String Basics question from an ABJECT ignoramus
  • DonFromPgh
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Graduate Massless electrons stable if the Universe approaches a de Sitter Universe?
  • plymale2021
  • · Replies 13 ·
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Graduate Charge conjugation in quantum gravity
  • Joker93
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High School Does the Laplace operator equal the Del operator squared?
  • Safinaz
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Undergrad Bohmian mechanics and String theory
  • TheHeraclitus
  • · Replies 28 ·
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High School What would happen if there were no inertia?
  • Sundown444
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Undergrad New Lepton Universality Data To Be Announced Tuesday, 18 October 2021
  • ohwilleke
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Graduate Cohomology and fermions in supersymmetry
  • kakaho345
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High School XENON1T and possible dark energy detection
  • Melbourne Guy
  • · Replies 6 ·
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Graduate Quantum theory without classical time: quantum gravity and unification
  • the_pulp
  • · Replies 1 ·
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Undergrad String theory in 4 dimensions?
  • TheHeraclitus
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Graduate Looking for the earliest articles about Quantum Gravity
  • joseywales
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High School What Happens If Tachyons Are Detected?
  • dendros
  • · Replies 28 ·
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Graduate Edward Witten and the Mathematical Multiverse?
  • Suekdccia
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Graduate Any model or theory in physics akin to "Law without law"?
  • Suekdccia
  • · Replies 7 ·
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Undergrad Are these descriptions about extra dimensions really true?
  • austinquestioner
  • · Replies 17 ·
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Undergrad Scalar product and generalised coordinates
  • dyn
  • · Replies 33 ·
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Undergrad Is Supersymmetry required by String theory?
  • TheHeraclitus
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High School Could atoms be formed from other quarks than up and down?
  • elcaro
  • · Replies 5 ·
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Graduate Do you agree with Jeff Bezos on theoretical physics?
  • Monsterboy
  • · Replies 25 ·
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Undergrad Ontology of Causal Dynamical Triangulation
  • TheHeraclitus
  • · Replies 4 ·
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Undergrad What Explains the Odd Behavior of the Four Fundamental Forces?
  • Zeeshan Ahmad
  • · Replies 13 ·
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Undergrad Multiverse: How Many Universes Could Exist?
  • LightningInAJar
  • · Replies 8 ·
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Undergrad Phase space integral in noninteracting dipole system
  • raisins
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Undergrad More rigorous Euler-Lagrange derivation
  • romsofia
  • · Replies 5 ·
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Graduate A question about emergent gravity
  • Heidi
  • · Replies 10 ·
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Graduate Why Does Hamilton's Principle Use L=KE-PE Instead of L=KE+PE?
  • Trying2Learn
  • · Replies 13 ·
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Graduate New take on Tegmarks MUH --Geometric Transformation Internalization
  • dtorge26
  • · Replies 6 ·
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Graduate What are the difficulties of the rishon model?
  • Prishon
  • · Replies 4 ·
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Undergrad Is the Higgs field in its present form phlogiston-like?
  • Prishon
  • · Replies 6 ·
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Undergrad Why are gravitons expected to exist when gravity is just warped spacetime?
  • thegroundhog
  • · Replies 22 ·
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Graduate Is ADS Theory a Quantum Theory? Hawking's Bet and the ADS/CFT Equivalence
  • Heidi
  • · Replies 10 ·
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Graduate Is Theoretical Physics Wasting Our Best Living Minds On Nonsense? Moved
  • swampwiz
  • · Replies 8 ·
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Graduate Nobel laureates for and against string theory?
  • Suekdccia
  • · Replies 2 ·
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Undergrad Flat arena for quantum gravity?
  • gerald V
  • · Replies 5 ·
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High School Implication of Goedel's theorems on physics
  • aman
  • · Replies 8 ·
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High School What's the distance metric for a compactified dimension?
  • Paige_Turner
  • · Replies 14 ·
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