The quest for the unification of fundamental interactions has become the most challenging frontier of sciences in the 21st century. This book presents a detailed analysis and systematic investigation of the foundations of the hyperunified field theory (HUFT) in light of the path integral formulation with the least action principle. Alternative to other unification theories, the starting point of HUFT is initiated from a simple notion that the universe is made of the fundamental building block which is always moving and obeys the basic rule. Such a rule is delved into in this book by proposing the maximum locally entangled-qubits motion principle together with the scaling and gauge invariance principle. These two basic guiding principles are demonstrated to lay the foundations of HUFT, which enable enables us to discuss a series of long-standing fundamental questions, such as: why does the fundamental building block of nature appear as an entangled qubit-spinor field? what brings about the fundamental symmetry of nature? how does the inhomogeneous hyperspin gauge symmetry govern all basic forces? what is the nature of gravity and space–time? how can the space–time dimension and qubit-spinor field be categorized? why do we live in a universe with only four-dimensional space–time? why are there more than one family of leptons and quarks? how does the early universe evolve to be inflationary? what is the nature of dark matter and dark energy?
Foundations of the Hyperunified Field Theory will be of great interest to graduate and senior undergraduate students, junior and senior researchers in theoretical physics, quantum field theory, particle physics, gravitational theory, cosmology, as well as mathematical physics and general physics.
Sample Chapter(s)
Preface
Chapter 1: Introduction
Contents:
- Preface
- Fundamental Building Block and Symmetry:
- Introduction
- Maximum Coherence Motion Principle and Emergence of Spinor Field, Space–Time and Symmetry
- Spinor Field as Local Coherent State of Qubit
- Local Coherent-qubits Motion Postulate and Qubit-spinor Fields as Majorana and Dirac Fermions
- Hyperqubit-spinor Field and Hyperspin Symmetry in Hyper-space–time with Periodic ϱc-spin Charge
- Categorization of Hyperqubit-spinor Field and Hyper-space–time
- String-like Qubit-spinor Field and Self-conjugated Chiral Qubit-spinor Field
- Locally Entangled-qubits Motion Postulate and Inhomogeneous Hyperspin Symmetry of Entangled Hyperqubit-spinor Field as Lepton–Quark States
- Ultra-grand Unified Qubit-spinor Field and Comprehension on Lepton–quark States with One More Family and Universe with 4D Space–time
- Maximum Locally Entangled-qubits Motion Principle and Hyperunified Qubit-spinor Field as Fundamental Building Block with Inhomogeneous Hyperspin Symmetry as Fundamental Symmetry
- Summaries and Conclusions with Remarks
- References
- Fundamental Interaction and Evolving Universe:
- Introduction
- Gauge Invariance Principle and the Gravitational Relativistic Quantum Theory with Inhomogeneous Hyperspin and ϱc-spin Gauge Symmetries
- Hyper-fiber Bundle Structure of Biframe Hyper-space–time and Genesis of Hyper-gravigauge Field with Gravitational Origin of Gauge Symmetry
- Hyperunified Field Theory of Fundamental Building Block and Fundamental Interaction
- Hyperunified Field Theory with Gauge-gravity Correspondence and Dynamics of Fundamental Fields with Conserved Currents
- Conservation Laws and Dynamic Evolution Equation in HUFT
- Hyperunified Field Theory with Gravity-geometry Correspondence and Einstein-Hilbert Type Action with Emergent Symmetry GL(Dh,R) under Flowing Unitary Gauge
- Hyperunified Field Theory with Geometry-gauge Correspondence and Dynamics of Fundamental Fields with Non-commutative Geometry
- Hyperunified Field Theory in GQFT under Entirety Unitary Gauge and Gauge-type/Geometric Gravitational Equations Based on Gauge-Geometry Duality
- Evolution of Early Universe with Nonsingular Background Space–time and Dark Universe with Candidates of Dark Matter and Dark Energy in HUFT
- Symmetry Breaking Mechanism in HUFT and Comprehension on Higgs Boson and Lepton–quark States in SM
- Conclusions and Discussions
- References
- Acknowledgments
- Author Biography
Readership: Graduates and researchers working on theoretical physics, particle physics and/or cosmology.

Yue-Liang Wu, a well-known theoretical physicist, is a member of the Chinese Academy of Sciences (CAS), The World Academy of Sciences (TWAS), and the International Eurasian Academy of Sciences (IEAS). He currently serves as Academic Vice-President of the University of Chinese Academy of Sciences (UCAS), Director of International Centre for Theoretical Physics Asia-Pacific (ICTP-AP, UNESCO), Director of Academic Science Committee of Institute of Theoretical Physics, Chinese Academy of Sciences, as well as Chief Scientist of the Taiji Program in Space for Gravitational Wave Detection in China.
Born in 1962, he graduated from Nanjing University in 1982 and received his Ph.D. at the Institute of Theoretical Physics, CAS, in 1987. After joining Dortmund University and Mainz University in Germany (1987–1993), he joined Carnegie Mellon University and Ohio State University in the USA (1993–1996). Since 1996, he has been with the Institute of Theoretical Physics, CAS (ITP-CAS). His many years of professional experience with ITP-CAS include Director of High Energy Physics Division of ITP-CAS (1998–2003), Deputy Director of ITP-CAS (2003–2007), and Director of ITP-CAS (2007–2012). He was later on appointed to serve as Vice-President and Executive Vice-President of UCAS (2012–2019). He also served as Founding Director of the CAS Key Laboratory (2008) and State Key Laboratory of Theoretical Physics (2011), and Founding Director of Kavli Institute for Theoretical Physics China (KITPC) (2006) at the CAS.
As a theoretical physicist, Yue-Liang Wu devoted his research to exploring the basic laws of nature and the fundamental structure of matter, which concerns elementary particle physics and quantum field theory (QFT), gravitational quantum field theory (GQFT), unification theory, and quanta-to-cosmos physics. Topics of interest in his research include symmetry principle, nature of gravity and space–time, gravitational gauge-geometry duality, hyperunified field theory (HUFT), symmetry-preserving and infinity-free loop regularization (LORE) and renormalization of QFT, dark matter and dark energy, charge conjugate and parity (CP) symmetry violation, gauge family symmetry and neutrino physics, low energy dynamics of quantum chromodynamics and quark confinement, chiral dynamics and heavy quark effective field theory, and topological quantum field theory.
The outstanding work of Yue-Liang Wu on the CP violation and quark-lepton flavor physics has won the prestigious State Natural Science Award of China. His research works have been supported by the Distinguished Youth Fund of the National Natural Science Foundation of China, the National '973 Program' (as the chief scientist on "Theoretical and Pre-experimental Studies of Dark Matter and Dark Energy"), as well as the National Key Research and Development Program of China and the Strategic Priority Research Program of the CAS.