90 citations · 322 across the 15 of their papers we have counts for
15 papers
Quantum Suicide in Many-Worlds Implies P=NP
Veronika Baumann, Alberto Rolandi
In this paper we propose a totally serious algorithm to solve NP problems in polynomial time provided one is willing to wager the fate of all observers in the universe on the many-…
Time delocalization and causality across temporal quantum reference frames
Veronika Baumann, Maximilian P. E. Lock
In relational quantum dynamics, evolution emerges via the correlations between some system of interest and a clock system, which plays the role of a temporal reference frame. Their…
Emergence of Classicality in Wigner's Friend Scenarios
Tom Rivlin, Sophie Engineer, Veronika Baumann
The Wigner's Friend (WF) thought experiment concerns quantum measurements by a 'superobserver' of an observer measuring a quantum system. Variations on the setup and its extended v…
No quantum advantage for violating fixed-order inequalities?
Veronika Baumann, Ämin Baumeler, Eleftherios-Ermis Tselentis
In standard quantum theory, the causal relations between operations are fixed. One can relax this notion by allowing for dynamical arrangements, where operations may influence the…
Classical information and collapse in Wigner's friend setups
Veronika Baumann
The famous Wigner's friend experiment considers an observer -- the friend -- and a superobserver -- Wigner -- who treats the friend as a quantum system and her interaction with oth…
Wigner's friend's memory and the no-signaling principle
Veronika Baumann, Časlav Brukner
The Wigner's friend experiment is a thought experiment in which a so-called superobserver (Wigner) observes another observer (the friend) who has performed a quantum measurement on…
Many Worlds are irrelevant for the problem of the arrow of time
Veronika Baumann, Flavio Del Santo
In a recent paper, S. Gao has claimed that, under the assumption that the initial state of the universe is a pure quantum state, only the many worlds interpretation can account for…
Noncausal Page-Wootters circuits
Veronika Baumann, Marius Krumm, Philippe Allard Guérin +1
One of the most fundamental open problems in physics is the unification of general relativity and quantum theory to a theory of quantum gravity. An aspect that might become relevan…
A no-go theorem for the persistent reality of Wigner's friend's perception
Philippe Allard Guérin, Veronika Baumann, Flavio Del Santo +1
The notorious Wigner's friend thought experiment (and modifications thereof) has in recent years received renewed interest especially due to new arguments that force us to question…
Generalized probability rules from a timeless formulation of Wigner's friend scenarios
Veronika Baumann, Flavio Del Santo, Alexander R. H. Smith +3
The quantum measurement problem can be regarded as the tension between the two alternative dynamics prescribed by quantum mechanics: the unitary evolution of the wave function and…
Wigner's friend as a rational agent
Veronika Baumann, Časlav Brukner
In a joint paper Jeff Bub and Itamar Pitowski argued that the quantum state represents `the credence function of a rational agent [...] who is updating probabilities on the basis o…
Comment on Healey's "Quantum Theory and the Limits of Objectivity"
Veronika Baumann, Flavio Del Santo, Caslav Brukner
In this comment we critically review an argument against the existence of objective physical outcomes, recently proposed by R. Healey [Foundations of Physics, 48(11), 1568-1589]. W…
On Formalisms and Interpretations
Veronika Baumann, Stefan Wolf
One of the reasons for the heated debates around the interpretations of quantum theory is a simple confusion between the notions of formalism versus interpretation. In this note, w…
The measurement problem is the measurement problem is the measurement problem
Veronika Baumann, Arne Hansen, Stefan Wolf
Recently, it has been stated that single-world interpretations of quantum theory are logically inconsistent. The claim is derived from contradicting statements of agents in a setup…
Appearance of causality in process matrices when performing fixed-basis measurements for two parties
Veronika Baumann, Časlav Brukner
The recently developed framework for quantum theory with no global causal order allows for quantum processes in which operations in local laboratories are neither causally ordered…