## Robert B. Griffiths

Otto Stern University Professor Emeritus

Condensed Matter Physics

Wean Hall 6309

412-268-2765

# Education & Professional Experience

PhD: Stanford University

Honors and Awards:

National Academy of Sciences (1987)

# Research Interests

Quantum mechanics is hard to understand not only because it involves unfamiliar mathematics, but also because the usual discussion in textbooks about how to relate the mathematics to the real world is incomplete. Supplying the missing link(s) and working out a fully consistent form of quantum theory is the goal of a research program which I initiated in 1984, and which, with major contributions by Roland Omnes, Murray Gell-Mann, and James Hartle, has resulted in what is now called the consistent (or decoherent) history approach to quantum theory. So far as is known at present, this approach is powerful enough to resolve the various quantum paradoxes (Schrodinger's cat, Einstein-Podolsky-Rosen, etc.) without any mysterious action-at-a-distance, and it makes good sense out of quantum measurements. I have written a book Consistent Quantum Theory (Cambridge University Press) which explains the essentials of this approach.

# Selected Publications

Robert B. Griffiths, *Consistent quantum measurements*, Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 52, 188 (2015)

Robert B. Griffiths, *The Consistent Histories Approach to Quantum Mechanics*, Stanford Encyclopedia of Philosophy (2014)

Robert B. Griffiths, *The New Quantum Logic*, Found Phys 44, 610 (2014)

Robert B. Griffiths, *Epistemic restrictions in Hilbert space quantum mechanics*, Phys. Rev. A 88, 42122 (2013)

Patrick J. Coles, Vlad Gheorghiu, Robert B. Griffiths, *Consistent histories for tunneling molecules subject to collisional decoherence*, Physical Review A 86, 042111 (2012)

Robert B. Griffiths, *Quantum Locality*, Foundations of Physics 41, 705 (2011)

Dan Stahlke, Robert B. Griffiths, *Entanglement requirements for implementing bipartite unitary operations*, Physical Review A 84, 032316 (2011)

Robert B. Griffiths, *EPR, Bell, and quantum locality*, American Journal of Physics 79, 954 (2011)

Patrick J. Coles, Li Yu, Vlad Gheorghiu, Robert B. Griffiths, *Information-theoretic treatment of tripartite systems and quantum channels*, Physical Review A 83, 062338 (2011)

Vlad Gheorghiu, Shiang Yong Looi, Robert B. Griffiths, *Location of quantum information in additive graph codes*, Physical Review A 81, 032326 (2010)