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### THURSDAY, OCTOBER 3rd

Austrian Academy of Sciences — Festsaal

**Opening Event:** **»The Future of Quantum Mechanics«**

- 19:00–21:00
- Presentations by and Plenary Discussion with

Stephen L. Adler, Gerard ’t Hooft, Masanao Ozawa

Quantum Mechanics is the most successful theory of all time for describing physical reality. However, after 100 years – despite its success – foundational principles for Quantum Mechanics still remain unknown. Will future developments in Quantum Mechanics reveal such principles in coming years? Three distinguished scholars will consider the future of Quantum Mechanics, and address topics such as quantum nonlocality, entanglement, and a possible sub-quantum mechanics.

**Stephen Adler** Professor emeritus and former Albert Einstein Professor (*Institute of Advanced Study, Princeton*). Winner of the Dirac Medal in Theoretical Physics. He has developed a model which identifies “quantum theory as an emergent phenomenon”.

**Gerard ’t Hooft** Distinguished Professor (*Utrecht University*). Winner of the Wolf Prize, and a Nobel Laureate in physics. His many scientific interests include the exploration of a deterministic foundation for quantum mechanics.

**Masanao Ozawa** Professor (*Nagoya University & National Institute of Informatics*). He has proposed a “universally valid reformulation of the Heisenberg Uncertainty Principle”, which would indicate the necessity to modify the standard view of Quantum Mechanics.

### FRIDAY, OCTOBER 4th

Austrian Academy of Sciences — Theatersaal

- 09:00
- Welcome address
- SESSION 1:
- POSSIBLE BACKGROUNDS FOR AN EMERGENT QUANTUM MECHANICS
- Chair: Gerhard Grössing
- 9:15–10:00
- KEYNOTE LECTURE

Gerard ’t Hooft*(Spinoza Institute and Utrecht University, NL)*Physics on the Boundary between Classical and Quantum Mechanics

- 10:00–10:30
- Hans-Thomas Elze
*(University of Pisa, IT)*

An Action Principle for Cellular Automata and the

Linearity of Quantum Mechanics - 10:30–11:00
- Dieter Schuch
*(J.W. Goethe Universität, Frankfurt a.M., DE)*

Is Quantum Mechanics Emerging from a Nonlinear Theory? - 11:00–11:15
- Coffee break
- Chair: Ángel Sanz
- 11:15–11:45
- Yves Couder
*(Université Paris Diderot, CNRS, FR)*

Observable Macroscopic Eigenstates - 11:45–12:15
- Gerhard Grössing
*(Austrian Institute for Nonlinear Studies, AT)*

Relational Causality and Classical Probability: Grounding

Quantum Phenomenology in a Superclassical Theory - 12:15–14:00
- Lunch break
- Chair: GianCarlo Ghirardi
- 14:00–14:45
- KEYNOTE LECTURE

Stephen Adler*(Institute for Advanced Study, Princeton, USA)*

Incorporating Gravity into Trace Dynamics:

The Induced Gravitational Action - 14:45–15:15
- Ana María Cetto
*(Universidad Nacional Autónoma de México, MX)*

Quantum Emergence and Role of the Zero-Point Field - 15:15–15:45
- Theo Nieuwenhuizen
*(University of Amsterdam, NL)*

A Sub-Quantum Arrow of Time - 15:45–16:00
- Coffee break
- Chair: Yuji Hasegawa
- 16:00–16:30
- Ariel Caticha
*(University at Albany, USA)*

Entropic Dynamics: An Inference Approach to Time and

Quantum Theory - 16:30–17:00
- Manfried Faber (
*Vienna University of Technology, AT)*

Spin and Charge from Space and Time - 17:00–17:30
- Garnet Ord
*(Ryerson University, Toronto, CA)*

Which Comes First, Time or the Clock that Measures it? - 17:30–17:45
- Coffee break
**Chair: Hans-Thomas Elze**- 17:45–18:15
- Petr Jizba
*(Technical University, Prague, CZ)*

Cooperative Dynamical Processes: The Emergence of

Relativistic Quantum Theory - 18:15–18:45
- Edward Nelson
*(Princeton University, USA)*

Stochastic Mechanics applied to Relativistic Fields - 19:00
- Departure for Excursion to »Heurigen« Dinner

### SATURDAY, OCTOBER 5th

Austrian Academy of Sciences — Theatersaal

- SESSION 2:
- NONLOCALITY AND THE QUANTUM-CLASSICAL TRANSITION
- Chair: Gregor Weihs
- 9:00–9:30
- Caslav Brukner (
*University of Vienna, AT)*

Quantum Indefiniteness of Causal Relations - 9:30–10:00
- Werner Hofer (
*University of Liverpool, UK)*

Elements of a Physics for the 21st Century - 10:00–10:30
- Marian Kupczynski (
*Université du Québec en Outaouais, CA)*

Causality and Local Determinism versus Quantum Nonlocality - 10:30–11:00
- Jan Walleczek
*(FFF, USA, and Phenoscience Laboratories, Berlin, DE)*

Does Epistemic Non-Signalling Allow the Peaceful Co-Existence of Special Relativity and Quantum Nonlocality? - 11:00–11:15
- Coffee break
- SESSION 3:
- NEW EXPERIMENTS IN QUANTUM FOUNDATIONS
- Chair: Bei-Lok Hu
- 11:15–11:45
- Basil Hiley (
*University of London, UK)*

Non-Commutative Probability, Conditional Expectation Values as Weak Values - 11:45–12:15
- Robert Flack (
*University College London, UK)*

Weak Measurement and its Experimental Realization with Non-Zero Mass - 12:15–14:00
- Lunch break
- Chair: Kristel Michielsen
- 14:00–14:30
- Helmut Rauch (
*Vienna University of Technology, AT)*

Non-Locality and Destructive Interference of Matter Waves - 14:30–15:00
- Sabine Hossenfelder (
*NORDITA and Stockholm University, SE)*

Testing Superdeterministic Conspiracy - 15:00–15:30
- Andrei Khrennikov (
*Linnaeus University, Växjö, SE)*

To Quantum Probabilities from Classical Random Fields and Detectors of the Threshold Type - 15:30–16:00
- Gregor Weihs (
*University of Innsbruck, AT)*

Precision Tests of Quantum Interference - 16:00–16:15
- Coffee break
- Chair: Andrei Khrennikov
- 16:15–16:45
- Lajos Diósi (
*Wigner Center for Physics Research, Budapest, HU)*

Newton Force from Wave Function Collapse: Speculations and Test - 16:45–17:15
- Bei-Lok Hu (
*University of Maryland, College Park, USA)*

Gravitational Decoherence and Alternative Quantum Theories - 17:15–17:30
- Coffee break
**Chair: Theo Nieuwenhuizen**- 17:30–18:00
- GianCarlo Ghirardi (
*Abdus Salam**ICTP and University of Trieste, IT)*

Probing the Superposition Principle at the Macroscopic Level - 18:00–18:30
- Angelo Bassi (
*University of Trieste, IT)*

Collapse Models: From Theoretical Foundations to Experimental Verifications - 18:30–19:00
- Markus Arndt (
*University of Vienna, AT)*

Experimental Explorations of Quantum Macroscopicity - 20:00
- Conference Dinner

### SUNDAY, OCTOBER 6th

Austrian Academy of Sciences — Theatersaal

- SESSION 4:
- RECONSIDERING HEISENBERG’S UNCERTAINTY PRINCIPLE
- Chair: Markus Arndt
- 9:00–9:45
- KEYNOTE LECTURE

Masanao Ozawa (*Nagoya University, JP)*

Heisenberg’s Uncertainty Relation: Violation and Reformulation - 9:45–10:15
- Yuji Hasegawa (
*Vienna University of Technology, AT)*

Neutron Optical Studies of Fundamental Phenomena of Quantum Mechanics - 10:15–10:45
- Kristel Michielsen (
*Jülich Supercomputing Centre, DE)*

Event-by-Event Simulation of Single Neutron Experiments - 10:45–11:00
- Coffee break
- SESSION 5:
- BOHM-TYPE TRAJECTORIES AND RELATED THEORIES
- Chair: Basil Hiley
- 11:00–11:30
- Maurice de Gosson (
*University of Vienna, AT)*

Short-Time Behavior of Bohmian Trajectories - 11:30–12:00
- Bill Poirier (
*Texas Tech University, Lubbock, USA)*

Trajectory-Based Theory of Relativistic Quantum Particles - 12:00–12:30
- Samuel Colin (
*Clemson University, USA)*

Mechanism for the Suppression of Quantum Noise at Large Scales on Expanding Space - 12:30–14:00
- Lunch break
- Chair: Dieter Schuch
- 14:00–14:30
- Ángel Sanz (
*Instituto de Física Fundamental, CSIC, Madrid, ES)*

Particles, Waves and Trajectories: 210 Years after Young’s Experiment - 14:30–15:00
- Howard Wiseman (
*Griffith University, Brisbane, AU)*

Weak Values, Bohmian Mechanics, and Many Worlds - 15:00–15:15
- Coffee break
- SESSION 6:
- WEAK VALUES AND MEASUREMENTS
- Chair: Jan Walleczek
- 15:15–15:45
- Boris Braverman (
*Massachusetts Inst. of Tech., Cambridge, USA)*

Probing the Sub-Quantum with Weak Measurements - 15:45–16:30
- Jeff Tollaksen (
*Chapman University, California, USA)*

The Time-Symmetric Formulation of Quantum Mechanics, Weak Values and the Classical Limit of Quantum Mechanics - 16:30–17:15
- KEYNOTE LECTURE

Aephraim Steinberg*(University of Toronto, CA)*

Experimental Information Tradeoffs: Weak Measurement, Uncertainty Relationships, et alia.

Closing of Conference