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Superstring theory - Quiz
Contributed by: Downes
  • 1. What is the fundamental constituent of reality according to superstring theory?
A) Leptons
B) Strings
C) Quarks
D) Bosons
  • 2. Which theory incorporates both general relativity and quantum field theory?
A) Classical mechanics
B) Special relativity
C) Quantum gravity
D) Thermodynamics
  • 3. What is the approximate radius of a string in superstring theory?
A) 10-20 cm
B) 10-33 cm
C) 10-10 cm
D) 10-15 cm
  • 4. What is the theoretical tension of a string?
A) 1020 N
B) 10-33 N
C) 1044 N
D) 1010 N
  • 5. What does superstring theory use to model gravity?
A) Supersymmetry
B) General relativity only
C) Renormalization
D) The Standard Model
  • 6. What is the proposed messenger particle of the gravitational force predicted by the theory?
A) The squark
B) The graviton
C) The photon
D) The gluon
  • 7. Which five theories are regarded as different limits of M-theory?
A) Type I, Type IIA, Type IIB, HO, and HE
B) Standard, Supersymmetric, Quantum, Relativistic, and Unified
C) Bosonic, Fermionic, Scalar, Vector, and Tensor
D) Type I, Type IIA, Type IIB, Type III, and Type IV
  • 8. What technique do physicists use to eliminate infinities in quantum field theory?
A) Supersymmetry
B) Supergauge
C) String tension calculation
D) Renormalization
  • 9. In what year did J. L. Gervais and B. Sakita work on supergauge?
A) 1971
B) 2006
C) 1985
D) 2011
  • 10. Which fundamental forces does renormalization successfully work for?
A) Electromagnetism, strong force, and weak force
B) All four fundamental forces
C) Gravity and electromagnetism
D) Gravity, strong force, and weak force
  • 11. What is the main difference between superstring theory and bosonic string theory?
A) Superstring theory does not use strings
B) Bosonic theory accounts for gravity
C) Bosonic theory includes supergauge
D) Superstring theory accounts for both fermions and bosons
  • 12. What does superstring theory attempt to explain in one theory?
A) Only atomic scale structures
B) Only gravity
C) Only the strong force
D) All particles and fundamental forces of nature
  • 13. What has the LHC failed to report evidence for so far?
A) The existence of strings
B) Large extra dimensions
C) The existence of particles
D) The existence of the weak force
  • 14. What is the mass constraint of squarks according to investigations mentioned?
A) 500 GeV
B) 1.1 TeV
C) 1 GeV
D) 100 TeV
  • 15. What is the mass constraint of gluinos according to investigations mentioned?
A) 1.1 TeV
B) 10 TeV
C) 200 GeV
D) 500 GeV
  • 16. How many spatial dimensions does our observed physical space have?
A) 6
B) 3
C) 4
D) 10
  • 17. Who originally discovered the D = 10 critical dimension?
A) John H. Schwarz
B) Edward Witten
C) Theodor Kaluza
D) Oskar Klein
  • 18. What is the name of the manifold that extra dimensions must take if compactified in string theory?
A) Euclidean manifold
B) Riemannian manifold
C) Calabi–Yau manifold
D) G2 manifold
  • 19. According to the text, what manifold must extra dimensions take within the framework of M-theory?
A) Sphere
B) G2 manifold
C) Calabi–Yau manifold
D) Torus
  • 20. What is the name of the symmetry that exchanges momentum modes for winding number?
A) Mirror symmetry
B) T-duality
C) Gauge symmetry
D) Parity symmetry
  • 21. What is the phenomenon called where T-duality leads to equivalences between different Calabi–Yau manifolds?
A) Compactification
B) Unification
C) Mirror symmetry
D) Brane restriction
  • 22. Which mechanism suggests our world lives on a 3-dimensional submanifold?
A) Brane
B) G2 manifold
C) Calabi–Yau manifold
D) Circle compactification
  • 23. According to F-theory, what is the status of the time dimension?
A) It may be multi-dimensional
B) It must be one-dimensional
C) It does not exist
D) It is always compactified
  • 24. How many consistent superstring theories are there according to the text?
A) Twelve
B) Five
C) Seven
D) Ten
  • 25. What is the name of the single underlying theory proposed during the second superstring revolution?
A) String-field theory
B) Universal quantum theory
C) M-theory
D) Unified string theory
  • 26. How many supercharges does the Type I string theory possess?
A) 8
B) 16
C) 64
D) 32
  • 27. How many supercharges do the Type II string theories possess?
A) 10
B) 32
C) 16
D) 64
  • 28. Heterotic string theories are a hybrid of a type I superstring and which other type of string?
A) Open string
B) Bosonic string
C) Type IIA string
D) Type IIB string
  • 29. What defines the difference between the two heterotic string theories?
A) Number of dimensions
B) Gauge group
C) Number of supercharges
D) Orientation of strings
  • 30. In what decade did the second superstring revolution occur?
A) 1980s
B) 2000s
C) 1970s
D) 1990s
  • 31. What is the accurate group for the SO(32) heterotic string theory?
A) Spin(16)
B) Spin(32)/Z2
C) E8×E8
D) SO(32)
  • 32. Where is the study of general relativity and quantum mechanics most commonly combined?
A) Atomic nuclei
B) Superstring laboratories
C) Black holes
D) Planck scale surfaces
  • 33. What is the average diameter of the strings described in superstring theory?
A) Planck length
B) Atomic radius
C) Infinite distance
D) Zero size
  • 34. In superstring theory, what are surfaces mapped as?
A) Quantum waves
B) Branes
C) Singularities
D) Point particles
  • 35. Why are singularities avoided in string theory during a 'Big Crunch'?
A) Particles disappear into black holes
B) Gravity becomes a repulsive force
C) The universe never reaches zero size
D) The universe expands into a different dimension
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