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pro vyhledávání: '"Ormrod, A."'
Autor:
Ormrod, Nick, Barrett, Jonathan
We develop a new interpretation of quantum theory by combining insights from extended Wigner's friend scenarios and quantum causal modelling. In this interpretation, which synthesizes ideas from relational quantum mechanics and consistent histories,
Externí odkaz:
http://arxiv.org/abs/2401.18005
Autor:
van der Lugt, Tein, Ormrod, Nick
It was recently found that the indefinite causal order in the quantum switch can be certified device-independently when assuming the impossibility of superluminal influences. Here we strengthen this result in two ways. First, we give a proof of this
Externí odkaz:
http://arxiv.org/abs/2311.00557
Autor:
Robert Griffiths, Sara Tai, Chris Sutton, Elizabeth Camacho, James Dixon, Jasper Palmier-Claus, Adam Jones, Natalie Welsh, Susan Ormrod, Ashma Krishan, Alison Dawber, Karina Lovell
Publikováno v:
Pilot and Feasibility Studies, Vol 10, Iss 1, Pp 1-12 (2024)
Abstract Background Rates of disengagement from early intervention in psychosis (EIP) services are high. Care coordinators make up the largest staff group in EIP services and have the most frequent and sustained contact with service users. The qualit
Externí odkaz:
https://doaj.org/article/92c35e25fbe6445e948b7982715c1c33
Autor:
Wilson, Matt, Ormrod, Nick
We reconstruct the transformations of quantum theory using a physically motivated postulate. This postulate states that transformations should be locally applicable, and recovers the linear unitary maps from pure quantum theory, as well as the comple
Externí odkaz:
http://arxiv.org/abs/2305.20063
It is shown that any theory that has certain properties has a measurement problem, in the sense that it makes predictions that are incompatible with measurement outcomes being absolute (that is, unique and non-relational). These properties are Bell N
Externí odkaz:
http://arxiv.org/abs/2303.03353
Autor:
Ormrod, Nick, Barrett, Jonathan
This paper builds on no-go theorems to the effect that quantum theory is inconsistent with observations being absolute; that is, unique and non-relative. Unlike the existing no-go results, the one introduced here is based on a theory-independent abso
Externí odkaz:
http://arxiv.org/abs/2209.03940
Over the past decade, a number of quantum processes have been proposed which are logically consistent, yet feature a cyclic causal structure. However, there is no general formal method to construct a process with an exotic causal structure in a way t
Externí odkaz:
http://arxiv.org/abs/2206.10042
Publikováno v:
Quantum 7, 1028 (2023)
Existing work on quantum causal structure assumes that one can perform arbitrary operations on the systems of interest. But this condition is often not met. Here, we extend the framework for quantum causal modelling to situations where a system can s
Externí odkaz:
http://arxiv.org/abs/2204.10273
Autor:
Anna Roach, Sophie Bennett, Isobel Heyman, Anna Coughtrey, Isabella Stokes, Xhorxhina Ndoci, Sonia Balakrishnan, Nicki Astle, Jessie Drinkwater, Rebecca Evans, Una Frederick, Michael Groszmann, Steve Jones, Katie McDonnell, Amanda Mobley, Abbie Murray, Helena O'Sullivan, Sarah Ormrod, Theodore Prendegast, Usha Rajalingam, Emily Webster, Rebecca Webster, Gareth Vinton, Roz Shafran
Publikováno v:
PLoS ONE, Vol 19, Iss 5, p e0302878 (2024)
BackgroundDespite the high prevalence of mental health difficulties in children and young people with long-term health conditions (LTCs), these difficulties and experiences are often overlooked and untreated. Previous research demonstrated the effect
Externí odkaz:
https://doaj.org/article/9185a45482f349488cdaec56be2ea5e1
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