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Why Are Some People Still Taking String Theory Seriously? String theory is controversial, but it is still one of the few ideas that tries to describe Quantum Physics and Gravity in one picture. This animation points to one of its best-known ideas: Holography. What happens on the boundary helps... show more
30,168 просмотров • 6 месяцев назад •via X (Twitter)
Комментарии: 36
Honestly, there are plenty of ideas that try to describe Quantum Physics and Gravity in one picture. Most of them are so fringe that even alternative theory specialist haven't had them on the radar. String theory got a huge boost through clever hocus pocus 10 dimension marketing
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Strings define gaps and spaces ... 1D paths of coherence ... coherence is structure.
Personally I ❤️ N-Dim
Despite making no progress, It can be hard for some people to turn their back on a Theory they have devoted a decade or more of their life toward.
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Holography isn’t only a string theory concept it’s very likely a universal concept
For decades String Theory has sucked up research dollars like a black hole, out of which nothing useful has been seen.
Asking AI which theory cracks it up the most and …
😄 youre not a good person
I’m so glad you chose holography as the topic. Because string theory is simply not needed for it. I work with adjacency every day and around this time last year, I witnessed and emergent holographic principle, in simulations testing adjacency as a universal operator and a generative operator. In the same series of simulations I also witnessed emergent gauge field symmetries and emergent quantum Hall effects as well. This suggests that adjacency mathematically is representing something that is plausible more fundamental than spacetime itself. 🤷🏽♂️ But my point of emphasis here is, string theory isn’t needed.
I think the way they arrived at this theory is a bit of a red flag though. "Ope, gonna need another dimension for that, bruh"
String theory keeps trying to unify gravity and quantum mechanics by adding more structure. The issue isn’t lack of structure. It’s where the model is anchored. Quantum mechanics already shows us a continuous wave function. Gravity shows up as large-scale coherence across systems. What’s missing is not another layer like strings. It’s recognizing that both are expressions of the same field behavior at different scales. When phase is retained, the wave function is deterministic. What gets called “quantum randomness” comes from phase being discarded at the measurement interface. At larger scales, that same field closes into stable, phase-locked structures. What is called “gravity” is the coherent coupling of those structures. Not a separate force. Not a different ontology. A scale transition. Electromagnetism isn’t just one interaction among others. It is the primary substrate of propagation and coupling across the vector-scalar slice. When that is recognized: Quantum mechanics = phase-governed field behavior (compressed at measurement) Gravity = large-scale nested electromagnetic coherence No bridge is needed between them. They are already continuous. The regress only shows up when we try to unify them from inside a split that isn’t actually there. Empirical derivation of EM Primacy in The Grammar of Projection. Upstream adressability in The Grammar of Persistence, both in this archive: The recursion holds. 🌀
A cool reading : ;-) "A dialog on quantum gravity" (Carlo Rovelli) (20 pages)
Una cuerda o la línea que compone ella es formada porqué? Por puntos. Recuerda Euclides en su Libro Elementos. Todo es Hipercuántico antes de Ser en la Existencia. — SCP
it is a valid yet incomplet theory.
1. Bekenstein-Hawking Black Hole Entropy (Holographic Motivation) S_BH = A / (4 * G_N * hbar) (with c=1) or in natural units (hbar=c=1): S_BH = A / (4 * G_N) where: - A = area of the event horizon - G_N = Newton's gravitational constant 2. AdS/CFT Parameter Mapping (Prime Example: AdS5/CFT4) lambda = g_YM^2 * N = L^4 / alpha'^2 g_s ~ 1/N where: - lambda = 't Hooft coupling - L = AdS radius - alpha' = string length squared (Regge slope) - g_s = string coupling - N = rank of the gauge group SU(N) 3. AdS Metric in Poincaré Coordinates ds^2 = (L^2 / z^2) * (dz^2 + eta_munu * dx^mu * dx^nu) where: - z -> 0 is the conformal boundary - eta_munu = Minkowski metric in d dimensions 4. GKPW Dictionary (Partition Function Equivalence) Z_gravity[phi_0] = Z_CFT[phi_0] = < exp( ∫ d^d x phi_0(x) * O(x) ) >_CFT In classical limit: Z_gravity[phi_0] ≈ exp( - S_on-shell[phi] ) 5. Bulk Scalar Field Near-Boundary Expansion phi(z,x) ~ z^(Δ_-) * phi_0(x) + z^(Δ_+) * <O(x)> + ... where the conformal dimension Δ satisfies: Δ*(Δ - d) = m^2 * L^2 Δ± = [d ± sqrt(d^2 + 4*m^2*L^2)] / 2 - phi_0(x) = source for the CFT operator O(x) - m = bulk field mass - d = boundary spacetime dimension 6. Correlation Functions from Holography <O(x1) ... O(xn)>_CFT = δ^n log Z_gravity / (δ phi_0(x1) ... δ phi_0(xn)) |_{phi_0=0} 7. Ryu-Takayanagi Formula (Holographic Entanglement Entropy) S_A = Area(γ_A) / (4 * G_N) where γ_A is the minimal (extremal) surface in the bulk with ∂γ_A = ∂A 8. Wilson Loop Expectation Value (Minimal Surface) <W(C)> ≈ exp( - Area(Σ_min) / (2 * π * alpha') ) where Σ_min is the minimal surface in the bulk bounded by the contour C on the boundary NOTATION SUMMARY - L : AdS radius - alpha' : string Regge slope (string length²) - g_s : string coupling - G_N : Newton's constant - lambda : 't Hooft coupling = g_YM² N - Δ : conformal dimension of CFT operator - m : bulk scalar mass - phi_0 : boundary source - O(x) : dual CFT operator - γ_A : minimal surface for entanglement entropy - Σ_min : minimal surface for Wilson loop - d : boundary dimension (bulk is d+1) - z : holographic radial coordinate (z=0 is boundary) These are the standard core equations and notation used in AdS/CFT holography within string theory. The animation in the original post visualizes the Wilson-loop / minimal-surface idea and the general holographic dictionary: boundary deformations (sources or loops) determine the bulk geometry.
Love the holographic principle. Só close to home. Like an album on an oldfashioned pick up. The music is stored on the álbum. The needle and speakers make it the spacious 3D world we can listen and dance to.
String theory is awesome Unfortunately they smuggle too much stuff in
In it's concept that each ring. Is vibrating to a specific frequency that truly can explain quantum physics.
yes 😄
No need of string theory to understand how and why "concentration of measure" occur on the equator of an hypersphere.
We have @TOEwithCurt @ericweinstein strings are dumb. It doesn’t work
I treated the universe as a Mobius boundary embedded in S3/2I and recovered over 30 predictions. We're not looking down on the ant, we are the embedded ant looking up.
If string theory relies on masses attracting then clearly the theory is garbage.
how bout the G-string theory , G as in gravitational
@Waterflowing0 Holography and string theory are orthogonal concepts. The holographic universe works just fine on the complex plane in 2.618 dimensions.
@Waterflowing0 You are both right : At The Bounce String Theory may apply (some say this proves it does ?); pass the c3 Bounce our Reality is Explained 👇
Math tricks remains where it belongs, the reality remains 3D.
some really cool recent work out there combining QP and G
What is the distance?
String Theory doesn't just occur in the Higgs' Field. lt also occurs through Rapid Acceleration of the Elemental Particles. Which are Prime Factors of the EM-Spectrum for Holographic Light Force via Plasma Radian Distance. E=MC² E=3MeV, 3MeV (-) E=MD E=3MeV, 1.5MeV E= -1.5MeV D°
Yes, the universe is the string section of an orchestra playing the music of the orbs.
世界初。弦理論の微小余剰6次元構造を具体的に再定義したら、ホログラフィック理論抜きで、綺麗に大統一理論の基礎まで理論化出来た。次世代の重力波測定機から周波数 1.5〜3 kHz の微弱なサイドバンドが観測されると、この理論は理論物理学の教科書さえ書き換える理論となる。ver.1.1(26'4/22) 論文（英語） 論文（日本語）
@ericweinstein
What if we try to use something more logical? 3 axioms on an E8 lattice = emergent spacetime, exact Einstein field equations and Maxwell’s equations. #QuantumGravity
![What String Theory Does That Classical Physics Doesn’t Classical Physics begins with a point particle. Its position is described by one function of time x = x(t) As time passes, that point traces a curve through Spacetime called a worldline. String theory changes the starting object. A string has length, so time alone is not enough. We also need a coordinate along the string Xᵘ = Xᵘ(τ, σ) Here τ is worldsheet time, and σ labels position along the string. As the string moves, it sweeps out a surface called a worldsheet. The action measures the area of that surface S = -T ∫ dτ dσ √[-det hₐᵦ] This is where string theory begins. #StringTheory #ClassicalMechanics #TheoreticalPhysics #Worldsheet #QuantumGravity #MathematicalPhysics #Spacetime #PhysicsVisualization #ScienceEducation](https://image.24vids.com/tw-2071782653909434562/amplify_video_thumb/2071782297662115840/img/9RLCJpQTdf_RlcY5.jpg)
![String Theory Lecture 1 A String Does Not Move Like a Point A point particle traces a line through spacetime. A string traces a surface. This is the first geometric shift in String Theory. Particle mechanics asks where one object is at time t, so its history is a curve. String Theory asks where every point of an extended object is at worldsheet time τ, so we need another coordinate telling us where we are along the string. For a point particle x(t) So, for one input of time we get a position in Spacetime. For a string Xᵘ(τ,σ) Here τ plays the role of time on the worldsheet, while σ labels position along the string. Freeze τ and vary σ, and you see the string at one instant. Let τ move, and that curve sweeps out a two-dimensional surface... the worldsheet. The same comparison appears in the action. For a relativistic point particle, the geometric action measures worldline length S = −m ∫ ds If we parameterize the path by t, the action has one integral, one parameter, and one tangent vector dxᵘ/dt For a string, the same idea grows by one dimension. The action measures area, not length. In Nambu-Goto form, S = −T ∫ dτ dσ √[−det hₐᵦ] Here T is the string tension. It plays a role similar to mass, but for an extended object. It weights the area of a surface rather than the length of a line. The particle action has ∫ dt because the history is one-dimensional. The string action has ∫ dτ dσ because the history is two-dimensional. We are no longer summing along a path, we are summing over a surface. The geometry changes for the same reason. For the particle, one derivative is enough dxᵘ/dt For the string, the geometry is built from two derivatives: ∂τXᵘ and ∂σXᵘ The first tells you how the string changes as worldsheet time flows. The second tells you how the embedding changes as you move along the string. Together they define the induced worldsheet metric hₐᵦ = ∂ₐXᵘ ∂ᵦXᵤ In plain terms, hₐᵦ measures tangent lengths and tangent angles on the worldsheet. From it, the area element is dA = dτ dσ √[−det hₐᵦ] This, the Nambu-Goto action is the direct analogue of the point-particle length action. The point particle extremizes length and the string extremizes area. For calculations, people usually switch to the Polyakov action: S = −(T/2) ∫ dτ dσ √[−γ] γᵃᵇ ∂ₐXᵘ ∂ᵦXᵤ This describes the same classical string dynamics, but the algebra is cleaner. After choosing conformal gauge, varying with respect to Xᵘ gives (∂²/∂τ² − ∂²/∂σ²) Xᵘ = 0 This is the first real dynamical payoff... a two-dimensional wave equation on the worldsheet. For a point particle, the equation of motion tells you how one position evolves along one path. For a string, it tells you how an entire curve evolves, with waves traveling along it. The term ∂²Xᵘ/∂τ² measures acceleration in worldsheet time, while ∂²Xᵘ/∂σ² measures curvature along the string. The time evolution is balanced by how the string bends along its own length. This is why strings have oscillation modes. A point particle has one trajectory. A string has many possible vibration patterns, each one a normal mode of the worldsheet wave equation. For a closed string, σ wraps around the loop Xᵘ(τ, σ + 2π) = Xᵘ(τ, σ) For an open string, one standard free-end condition is ∂σXᵘ = 0 at the endpoints. Solving the wave equation gives waves moving in opposite directions along the string Xᵘ(τ,σ) = Fᵘ(τ + σ) + Gᵘ(τ − σ) A function of τ + σ moves one way. A function of τ − σ moves the other. Therefore, a particle has a worldline, its action measures length, and its geometry uses one tangent. The string has a worldsheet, its action measures area, and its geometry uses two tangent directions. #StringTheory #TheoreticalPhysics #MathematicalPhysics #Physics #Spacetime](https://image.24vids.com/tw-2047925796963004514/amplify_video_thumb/2047925638485753856/img/d0IV19m4OAIfEf0I.jpg)
