The Philosophy of Vacuum Part 21. Physicists will find it extremely interesting, covering, as it does, technical subjects in an accessible way. For those with the necessary expertise, this book will provide an illuminating and authoritative exposition of a many-sided subject." -John D. Barrow, Times Literary Supplement. | The Vacuum and Unification 193 may all be just the dynamically determined ground state or vacuum of a superstring Vacuum dynamics and unification can hardly be taken further. References Aitchison I. J. R. 1982 An Informal Introduction to Gauge Field Theories Cambridge University Press. ---- 1985 Nothing s Plenty Cont. Phys. 26 333 91. ---- 1988 Berry s Topological Phase in Quantum Mechanics and Quantum Field Theory Physica Scripta T23 12 -20. Applequist T and Chodos A. 1983 Quantum Dynamics of Kaluza-Klein Theories Phys. Rev. D28 772-84. ---- ----- and Freund P. G. O. 1987 Modern Kaluza-Klein Theories Addison-Wesley Reading Mass. Awada M. A. and Thoms D. J. 1984 Induced Einstein-Hilbert-Yang-Mills Action from Quantum Effects in Generalized Kaluza-Klein Theory Phys. Lett. 135B 283-7. Berry M. V. 1984 Quantal Phase Factors Accompanying Adiabatic Changes Proc. Roy. Soc. London A392 45-57. Candelas P. and Weinberg S. 1984 Calculation of Gauge Couplings and Compact Circumferences from Self-consistent Dimensional Reduction Nucl. Phys. B237 396-441. Cremmer E. Julia B. and Scherk J. 1978 Supergravity Theory in 11 Dimensions Phys. Lett. 76B 409-12. ----and Scherk J. 1976 Spontaneous Compactification of Space in an Einstein-Yang-Mills-Higgs Model Nucl. Phys. B108 409-16. Davies P. C. W. 1975 Scalar Particle Production in Schwarzschild and Rindler Metrics J. Phys. A8 609-16. Duncan M. J. and Segre G. 1987 A Simplified Model for Superstring Compactification Phys. Lett. 195B 36-40. Freund P. G. O. 1985 Superstrings from 26 Dimensions Phys. Lett. 151B 387-90. ----and Rubin M. A. 1980 Dynamics of Dimensional Reduction Phys. Lett. 97B 233-5. Fulling S. A. 1973 Non-uniqueness of Canonical Field Quantization in Reimannian Space-Time Phys. Rev. D7 2850-62. Green M. B. and Schwartz J. H. 1984 Anomaly Cancellations in Supersymmetric D 10 Gauge Theory and Superstring Theory Phys. Lett. 149B 117-22. 194 I. J. R. Aitchison Gross D. J. Harvey J. Martinec E. and Rohn R. 1985 Heterotic .