## It is in deep sadness that we announce the passing of Gerhard Groessing on Monday 7th January 2019 after a serious illness.

The final farewell ceremony will be held on Saturday 19th January in Vienna.

Gerhard is survived by his wife Angelika and daughter Isabella.

Recent event: the ** David Bohm Centennial Symposium**, in the framework of
the fourth International Symposium on **Emergent Quantum Mechanics (EmQM17)**, University of London, 26-28 October, 2017.
See our conference webpage.

See also the Conference Proceedings in a Special Issue of "Entropy" inluding our paper on "Vacuum Landscaping: Cause of Nonlocal Influences without Signaling", Entropy 2018, 20(6), 458.

Earlier, we have organized
- together with the Fetzer-Franklin Fund -
the Third International Symposium on **Emergent Quantum Mechanics: EmQM15**.
See our conference webpage.

The free access Conference Proceedings of our EmQM15 symposium were published online on 30 March 2016: Journal of Physics: Conference Series Volume 701 (2016).

See also the free access Conference Proceedings of our earlier EmQM13 symposium, published online on 14 April 2014: Journal of Physics: Conference Series Volume 504 (2014).

Gerhard Groessing's talk as a pdf-file:

Published online on 10 May 2012: Journal of Physics: Conference Series Volume 361 (2012). These are the (free access) proceedings of an international conference organized by us at the University of Vienna (2011) on

**
**

**Emergent Quantum Mechanics (EmerQuM11).
See the EmerQuM11 conference webpage**

Gerhard Groessing's talk as a pdf-file:

Herbert Schwabl's talk as a pdf-file:

Johannes Mesa Pascasio's poster as a pdf-file:

## Other recent AINS publications (2015, 2016):

1. **"Extreme beam attenuation in double-slit experiments: Quantum and subquantum scenarios
"**, Ann. Phys. **353** (2015) 271-281,
quant-ph/arXiv:1406.1346.

Figure: Average trajectory behavior during the "quantum sweeper effect" for different transmission factors a at the right slit of a double slit setup. ("Superclassical" computer simulation of the sweeper effect)

We show that during stochastic beam attenuation in double slit experiments, there appear unexpected new effects for transmission factors below $10^{-4}$, which can eventually be observed with the aid of weak measurement techniques. These are denoted as quantum sweeper effects, which are characterized by the bunching together of low counting rate particles within very narrow spatial domains. We employ a "superclassical" modeling procedure which we have previously shown to produce predictions identical with those of standard quantum theory. Thus it is demonstrated that in reaching down to ever weaker channel intensities, the nonlinear nature of the probability density currents becomes ever more important. We finally show that the resulting unexpected effects nevertheless implicitly also exist in standard quantum mechanics.

2. **"Implications of a deeper level explanation of the deBroglie-Bohm version of quantum mechanics
"**,
Quantum Stud.: Math. Found. **2**, 1 (2015) 133-140,
quant-ph/arXiv:1412.8349.

Elements of a "deeper level" explanation of the deBroglie-Bohm (dBB) version of quantum mechanics are presented. Our explanation is based on an analogy of quantum wave-particle duality with bouncing droplets in an oscillating medium, the latter being identified as the vacuum's zero-point field. A hydrodynamic analogy of a similar type has recently come under criticism by Richardson et al., because despite striking similarities at a phenomenological level the governing equations related to the force on the particle are evidently different for the hydrodynamic and the quantum descriptions, respectively. However, said differences are not relevant if a radically different use of said analogy is being made, thereby essentially referring to emergent processes in our model. If the latter are taken into account, one can show that the forces on the particles are identical in both the dBB and our model. In particular, this identity results from an exact matching of our emergent velocity field with the Bohmian "guiding equation". One thus arrives at an explanation involving a deeper, i.e. subquantum, level of the dBB version of quantum mechanics. We show in particular how the classically-local approach of the usual hydrodynamical modeling can be overcome and how, as a consequence, the configuration-space version of dBB theory for $N$ particles can be completely substituted by a "superclassical" emergent dynamics of $N$ particles in real 3-dimensional space.

3. **"The Quantum Sweeper Effect
"**, J. Phys.: Conf. Series **626 012017** (2015),
quant-ph/arXiv:1502.04034.

4. With Jan Walleczek: **"Nonlocal quantum information transfer without superluminal signalling and communication
"**, Found. Phys. 46 (2016) 1208, doi:10.1007/s10701-016-9987-9,
quant-ph/arXiv:1501.07177.