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"On the coupling of Galilean-invariant field theories to curved spacetime" by Kristan Jensen has received a Select label.
This study presents a novel way to solve the problem of coupling Galilean-invariant quantum field theories to a fixed spacetime, which is very important for the Quantum Field Theory applications to condensed matter systems. The author shows that Newton-Cartan geometry subject to the shift symmetry arises in null reductions of Lorentzian manifolds. Thus, his proposal is realized for theories which are holographically dual to quantum gravity on Schrodinger spacetimes. He uses this null reduction to efficiently form tensorial invariants under the boost and particle number symmetries. They also explore the coupling of Schrodinger-invariant field theories to spacetime, which would necessitate the Newton-Cartan analogue of Weyl invariance. The clear exposition and solution presented expands on previous work, providing many sanity checks and find a new way to relates his construction to null reductions of Lorentzian manifolds, which is conceptually important and of great help in relating these sorts of non-relativistic constructions to better understood physics on Lorentzian manifolds.
"Illuminating the photon content of the proton within a global PDF analysis" by Valerio Bertone, Stefano Carrazza, Nathan P. Hartland and Juan Rojo has received the Select label.
This study tackles the precision issues caused at the LHC by the photon content of the proton, where it is found that corrections of up to 20% might be needed in many processes due to photon-initiated contributions. For the first time, the authors used the LUXqed formalism combined with the global NNPDF analysis framework. By combining these two methods, a state-of-the-art description of the photon content within the proton can be achieved, and the precision of theory predictions of LHC processes can be highly improved. Moreover, the authors consider the implications of this study in a range of phenomenological applications, which is particularly interesting for the interpretation of present and future LHC measurements.
"Phases of adjoint QCD3 and dualities" by Jaume Gomis, Zohar Komargodski and Nathan Seiberg is the first SciPost Physics article to receive the Select label.
This is an exploration of the phase diagram of three-dimensional gauge theory, both for large and small fermion masses. It is particularly tricky to obtain the phase diagrams for small masses, where quantum effects start to dominate. By applying general considerations of symmetries, anomalies and renormalisation group flows, the authors identified a hidden “quantum phase” in between the two semi-classical phase regions. This leads to the existence of certain dualities, for which the authors provide compelling evidence. Using a Chern-Simons term coupled to an adjoint Majorana fermion, the authors are able to successfully create a convincing phase diagram for three-dimensional gauge theory.
We are extremely happy to announce that the Vrije Universiteit Amsterdam is now backing our efforts to establish truly open science publishing. The VU has decided to financially support SciPost for the next 3 years with a yearly contribution of € 1,000. Many thanks!
Support agreements like this are what keep SciPost in position to keep publishing quality science free of charge for both authors and readers worldwide.
Germany’s Max Planck Society is a well-known driving force in publishing reform and the development of Open Access initiatives. We are pleased to announce that MPG has provided concrete support for the development of SciPost’s publishing infrastructure, in the form of a subsidy worth 20 k€.
These funds will allow SciPost to carry out the implementation of a number of projects to enhance and broaden its services to the community. Stay tuned for upcoming details in the next few weeks!
We are delighted to announce that the OpenAIRE EC FP7 Post-Grant Open Access Pilot has given SciPost a major development grant of 39k€.
This grant was obtained through the call for Proposals for Alternative Funding Mechanisms for non-Author Fee based Open Access Publishing.
SciPost will use these funds to further consolidate its cost-slashing business model, and to drive a substantial scaling up of its publishing activities in early 2018.