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