Henry Stapp

Last updated
Henry Stapp
Born
Henry Pierce Stapp

(1928-03-23) March 23, 1928 (age 96)
NationalityAmerican
CitizenshipAmerican
Alma mater University of Michigan (B.Sc.)
University of California, Berkeley (M.A.)(Ph.D.)
Scientific career
Fields Theoretical physics, quantum mechanics
Institutions University of California, Berkeley
Doctoral advisor Emilio Segrè
Owen Chamberlain

Henry Pierce Stapp (born March 23, 1928, in Cleveland, Ohio) [1] is an American mathematical physicist, known for his work in quantum mechanics, particularly the development of axiomatic S-matrix theory, the proofs of strong nonlocality properties, and the place of free will in the "orthodox" quantum mechanics of John von Neumann. [2]

Contents

Biography

Stapp received his PhD in particle physics at the University of California, Berkeley, under the supervision of Nobel Laureates Emilio Segrè and Owen Chamberlain.

In 1958, Stapp was invited by Wolfgang Pauli to ETH Zurich to work with him personally on basic problems in quantum mechanics. When Pauli died in December 1958, Stapp studied von Neumann's book, and on the basis of that work composed an article entitled "Mind, Matter and Quantum Mechanics", which was not submitted for publication; but the title became the title of his 1993 book.

In 1969 Stapp was invited by Werner Heisenberg to work with him at the Max Planck Institute in Munich.

In 1976 Stapp was invited by J.A. Wheeler to work with him on problems in the foundations of Quantum Mechanics. Dr. Stapp has published many papers pertaining to the non-local aspects of quantum mechanics and Bell's theorem, including three books published by Springer-Verlag.

Stapp has worked also in a number of conventional areas of high energy physics, including analysis of the scattering of polarized protons, parity violation, and S-matrix theory. [3]

Research

Some of Stapp's work concerns the implications of quantum mechanics (QM). He has argued for the relevance of QM to consciousness and free will. [4]

Stapp favors the idea that quantum wave functions collapse only when they interact with consciousness as a consequence of "orthodox" quantum mechanics. He argues that quantum wave functions collapse when conscious minds select one among the alternative quantum possibilities. His hypothesis of how mind may interact with matter via quantum processes in the brain differs from that of Penrose and Hameroff. While they postulate quantum computing in the microtubules in brain neurons, Stapp postulates a more global collapse, a 'mind like' wave-function collapse that exploits certain aspects of the quantum Zeno effect within the synapses. Stapp's view of the neural correlate of attention is explained in his book, Mindful Universe: Quantum Mechanics and the Participating Observer (2007). Stapp has claimed that consciousness is fundamental to the universe. [5]

In this book he credits John von Neumann's Mathematical Foundations of Quantum Mechanics (1955, 1932) with providing an "orthodox" quantum mechanics demonstrating mathematically the essential role of quantum physics in the mind. Stapp has taken interest in the work of Alfred North Whitehead. He has proposed what he calls a "revised Whiteheadianism". [6] He has also written a chapter "Whiteheadian Process and Quantum Theory" (pp. 92–102) in the book Physics and Whitehead: Quantum, Process, and Experience (2003).

His philosophy has been described as being influenced by both Heisenberg's physical realism and Bohr's idealism. A form of panpsychism [ clarification needed ] Philosopher Gordon Globus noted that "Stapp unhesitatingly descends into panexperientialism". [7] Stapp has co-authored papers with Jeffrey M. Schwartz. Schwartz has connected the work of Stapp with the concept of "mental force" and spiritual practices of Buddhism. [8]

Reception

Stapp's work has drawn criticism from scientists such as David Bourget and Danko Georgiev. [9] Recent papers and a book by Georgiev [10] [11] [12] criticize Stapp's model in two aspects: (1) The mind in Stapp's model does not have its own wavefunction or density matrix, but nevertheless can act upon the brain using projection operators. Such usage is not compatible with standard quantum mechanics because one can attach any number of ghostly minds to any point in space that act upon physical quantum systems with any projection operators. Therefore, Stapp's model does not build upon "the prevailing principles of physics", but negates them. [10] (2) Stapp's claim that quantum Zeno effect is robust against environmental decoherence directly contradicts a basic theorem in quantum information theory according to which acting with projection operators upon the density matrix of a quantum system can never decrease the Von Neumann entropy of the system, but can only increase it. [10] [11] Stapp has responded to Bourget and Georgiev stating that the allegations of errors are incorrect. [13] [14]

Selected publications

See also

Related Research Articles

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The many-worlds interpretation (MWI) is a philosophical position about how the mathematics used in quantum mechanics relates to physical reality. It asserts that the universal wavefunction is objectively real, and that there is no wave function collapse. This implies that all possible outcomes of quantum measurements are physically realized in some "world" or universe. In contrast to some other interpretations, the evolution of reality as a whole in MWI is rigidly deterministic and local. Many-worlds is also called the relative state formulation or the Everett interpretation, after physicist Hugh Everett, who first proposed it in 1957. Bryce DeWitt popularized the formulation and named it many-worlds in the 1970s.

<span class="mw-page-title-main">Schrödinger's cat</span> Thought experiment in quantum mechanics

In quantum mechanics, Schrödinger's cat is a thought experiment, sometimes described as a paradox, of quantum superposition. In the thought experiment, a hypothetical cat may be considered simultaneously both alive and dead, while it is unobserved in a closed box, as a result of its fate being linked to a random subatomic event that may or may not occur. This thought experiment was devised by physicist Erwin Schrödinger in 1935 in a discussion with Albert Einstein to illustrate what Schrödinger saw as the problems of the Copenhagen interpretation of quantum mechanics.

In quantum mechanics, a density matrix is a matrix that describes the quantum state of a physical system. It allows for the calculation of the probabilities of the outcomes of any measurement performed upon this system, using the Born rule. It is a generalization of the more usual state vectors or wavefunctions: while those can only represent pure states, density matrices can also represent mixed states. Mixed states arise in quantum mechanics in two different situations:

  1. when the preparation of the system is not fully known, and thus one must deal with a statistical ensemble of possible preparations, and
  2. when one wants to describe a physical system that is entangled with another, without describing their combined state; this case is typical for a system interacting with some environment.

In quantum mechanics, wave function collapse, also called reduction of the state vector, occurs when a wave function—initially in a superposition of several eigenstates—reduces to a single eigenstate due to interaction with the external world. This interaction is called an observation, and is the essence of a measurement in quantum mechanics, which connects the wave function with classical observables such as position and momentum. Collapse is one of the two processes by which quantum systems evolve in time; the other is the continuous evolution governed by the Schrödinger equation.

<span class="mw-page-title-main">Quantum decoherence</span> Loss of quantum coherence

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The many-minds interpretation of quantum mechanics extends the many-worlds interpretation by proposing that the distinction between worlds should be made at the level of the mind of an individual observer. The concept was first introduced in 1970 by H. Dieter Zeh as a variant of the Hugh Everett interpretation in connection with quantum decoherence, and later explicitly called a many or multi-consciousness interpretation. The name many-minds interpretation was first used by David Albert and Barry Loewer in 1988.

<span class="mw-page-title-main">Panpsychism</span> View that mind is a fundamental feature of reality

In the philosophy of mind, panpsychism is the view that the mind or a mind-like aspect is a fundamental and ubiquitous feature of reality. It is also described as a theory that "the mind is a fundamental feature of the world which exists throughout the universe". It is one of the oldest philosophical theories, and has been ascribed to philosophers including Thales, Plato, Spinoza, Leibniz, William James, Alfred North Whitehead, Bertrand Russell, and Galen Strawson. In the 19th century, panpsychism was the default philosophy of mind in Western thought, but it saw a decline in the mid-20th century with the rise of logical positivism. Recent interest in the hard problem of consciousness and developments in the fields of neuroscience, psychology, and quantum physics have revived interest in panpsychism in the 21st century.

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References

  1. "Henry Stapp Curriculum Vitae" Archived 2014-12-10 at the Wayback Machine .
  2. Kaiser, D. (2011). How the Hippies Saved Physics: Science, Counterculture and the Quantum Revival. W. W. Norton & Company. pp. 15-17, p. 101, p. 254. ISBN   978-0393342314
  3. "Henry Stapp, Ph.D." Esalen Institute. May 12, 2005. Retrieved February 5, 2012.
  4. Robert Kane (27 July 2011). The Oxford Handbook of Free Will: Second Edition. Oxford University Press, USA. pp. 74–76. ISBN   978-0-19-539969-1.
  5. Deepak C; Stapp, H. (2014). "Is a Mind-Element Needed to Interpret Quantum Mechanics? Do Physically Undetermined Choices Enter into the Evolution of the Physical Universe?". The Huffington Post. Retrieved 2014-10-28.
  6. Hartshorne, C. (1984). Creativity in American Philosophy. State University of New York Press. p. 108. ISBN   0-87395-816-0
  7. Skrbina, D. (2009). Mind that Abides: Panpsychism in the New Millennium. John Benjamins Publishing Company. p. 72. ISBN   978-9027252111
  8. Schwartz, J. M; Begley, S. (2003). The Mind and the Brain: Neuroplasticity and the Power of Mental Force. ReganBooks. ISBN   0-06-098847-9
  9. Bourget, D. (2004). "Quantum Leaps in Philosophy of Mind: A Critique of Stapp's Theory". Journal of Consciousness Studies . 11 (12): 17–42.
  10. 1 2 3 Georgiev, D. (2012). "Mind efforts, quantum Zeno effect and environmental decoherence". NeuroQuantology . 10 (3): 374–388. doi:10.14704/nq.2012.10.3.552.
  11. 1 2 Georgiev, D. (2015). "Monte Carlo simulation of quantum Zeno effect in the brain". International Journal of Modern Physics B . 29 (7): 1550039. arXiv: 1412.4741 . Bibcode:2015IJMPB..2950039G. doi:10.1142/S0217979215500393. S2CID   118390522.
  12. Georgiev, Danko D. (2017). Quantum Information and Consciousness: A Gentle Introduction. Boca Raton: CRC Press. ISBN   9781138104488. OCLC   1003273264.
  13. Stapp, H. (2004). "Quantum Leaps in Philosophy of Mind: Reply to Bourget's Critique". Journal of Consciousness Studies 11 (12): 43-49.
  14. Stapp, H. (2012). "Reply to a Critic: "Mind Efforts, Quantum Zeno Effect and Environmental Decoherence". NeuroQuantology 10 (4): 601-605.

Further reading