Hi world, Arnau Rios speaking!

I am a theoretical physicist working at the University of Surrey. Surf the upper panel to find information about who I am and the research I carry on. Enjoy your visit!
Students or post-docs interested in carrying out a research project on theoretical nuclear physics and looking for funding opportunities, contact me!

Crust-core transition and Gogny forces 12/06/2017

Neutron stars are like chocolat fondants: solid in the outside and liquid in the inside. The neutron liquid sea turns into a solid crystaline lattice of nuclei at the so-called crust-core transition point. The density at which this transition occurs is correlated to experimental properties of nuclei. In this paper with the nuclear physics group in Barcelona, we explore the range of crust-core transitions predicted by Gogny nuclear interactions and look an neutron-star properties as well (like the mass-radius relation in the picture on the left). More details here.

Nuclear spectral functions and chiral forces 10/02/2017

Spectral functions characterise the properties of nucleons in dense matter. They provide a unique insight into nuclear correlations and can be used to access both thermodynamical and structural properties. We have found a way to characterise spectral functions and provide a link to chiral nuclear hamiltonians by looking at the size and shape of the spectral function's standard deviations. All explained in more detail in here!

Outreach 03/08/2016

Here's the talk that I gave at the TEDx Event "Redifining the Ordinary" on 27 February 2016. I hope you enjoy it!

Di-neutrons? Yes, please 16/02/2016

Di-neutrons are loosely bound states of two neutrons. They do not exist in free-space, but they can appear in dense nuclear media. In a preprint in collaboration with Felipe Isaule (who visited Surrey for a month on Jan 2015) and Prof. Hugo Arellano, we report on the first microscopic results on the structure of di-neutrons in neutron matter.

Fission paper out 01/02/2016

My second paper on nuclear fission, with results from Phil Goddard's thesis and in collaboration with Paul Stevenson, has now been published here. Have a look to see what you can do with 3D TDHF and boosts!

Rosh Sellahewa becomes a doctor 12/11/2015

Roshan Sellahewa, (co-supervised with Jim Al-Khalili) has successfully held his thesis viva today. His work on neutron star physics and the Gogny interaction has been published here. And there are more papers to come, even though Rosh has moved on to pastures new. Congratulations Rosh!

Fission week! 28/10/2015

This website has been on a standstill during my paternity leave on the summer of 2015 - but I am back to work! I have decided to dub this week "Fission week": my first paper on fission has been accepted for publication in Phys. Rev. C, and the second one is out now as a preprint. All these results were cooked up by Phil Goddard, a former PhD student that now does more useful stuff!

Pairing gap and correlations 23/02/2015

The pairing gap in high-density neutron matter is sensite to short- and long-range correlations. Some new results on these effects are presented in a preprint, written with collaborators at Washington University in St. Louis.

Phil Goddard becomes a doctor 26/09/2014

Arnau's second PhD student, Phil Goddard, (co-supervised with Paul Stevenson) has successfully held his thesis viva today. Congratulations Phil!

Gogny forces and neutron stars 31/07/2014

The first paper from Rosh Sellahewa's PhD is now out. Check it out if you are interested on Gogny forces or neutron stars! It's here.

Propagating errors at finite T 15/07/2014

Arnau's first paper with Xavier Roca-Maza looks at error propagation in "hot" density functional theory. Have a look at it here.

Arianna Carbone becomes a doctor 11/04/2014

Arnau's first PhD student, Arianna Carbone, (co-supervised with Artur Polls) has successfully defended her thesis. Feel free to have a look at it here.

Creative Commons Paper 04/04/2014

Arnau first open access (CC licence) paper has been published today.

Post @ Surrey Physics Blog 03/01/2014

Arnau has written a post on the 10th-year anniversary of the Close Encounters of the PhD King. Check it out here.

High-momentum components in nuclear matter 02/01/2014

Arnau has submitted a paper on the density and isospin asymmetry dependence of short-range correlations. It has implications for electron scattering experiments. Check it here.

ECT* Workshop 22/08/2013

Arnau is organizing a workshop on "Advances in time-dependent methods for quantum many-body systems" at the ECT* in Trento this coming October. Registration is now open.

ISNET Workshop 21/08/2013

Thanks everyone for attending the workshop on "ISNET: Information and Statistics in Nuclear Experiment and Theory" at the University of Glasgow. Talks are available here.

IAS Workshop 13/08/2013

Thanks everyone for attending the workshop on "Neutron Stars" at the Institute of Advanced Studies. It was a terrific meeting! Talks and photos are available here.

Chiral three-nucleon forces 22/07/2013

Arianna Carbone's PhD thesis is going forward. Check this paper for our latest results involving three-body forces within the Green's functions approach.

Pygmy dipole resonance in Selenium 03/05/2013

Arnau's first paper with nuclear experimentalists!

More news

24-25 April 2013: A meeting on "Correlations in exotic nuclear systems" at the Cockroft Institute, Daresbury Laboratory

13 March 2013: Arnau's talk on Neutron Stars at the IoP South Central Branch

15 January 2013: find out why lead is so kinky here.

30 July 2012: Arnau's first paper with the Catania group has been submitted!

9 July 2012: Check out Arnau's outreach talk on the Higg's boson

22 March 2012: Arnau's talk at the PhD fair

10 January 2012: Arnau's first EPL has been published

6 January 2012: Arnau's first Phys. Rev. Lett. has been published