BritGrav 23

23rd British Gravity Meeting #BritGrav23 • 13–14 April 2023 • Organised by @MathsSoton

[BritGrav 23 @BritGrav23]

Hi everyone! We are very excited to announce the schedule for BritGrav23. Find the details of all the talks on the website. Looking forward to seeing a lot of you in Southampton. https://t.co/xAuyN4vw9a

[BritGrav 23 @BritGrav23]

Hi everyone! This is an announcement to say that BritGrav23 is taking over the BritGrav22 account. Remember to sign up for this years conference in Southampton here https://t.co/ZUjSxj3QuZ. Abstract deadline is 10th March. Hope to see many of you here :)

[BritGrav 23 @BritGrav23]

#BritGrav23 will be held 13 and 14 April 2023 at the University of Southampton @stag_centre @MathsSoton

Registration is free. Abstract deadline is 10 March

https://t.co/ZUjSxj3iFr

[BritGrav 23 @BritGrav23]

@matt_pitkin @Fabian_Gittins @GravityIop Recording of @Fabian_Gittins (@stag_centre) delivering the @GravityIop Thesis Prize talk on Gravitational Waves from Deformed Neutron Stars https://t.co/MAqte7Z5JX #BritGrav22

[BritGrav 23 @BritGrav23]

"A highly comprehensive thesis that represents a large body of published work" @matt_pitkin on awarding @Fabian_Gittins the @GravityIop thesis prize. #BritGrav22

[Ben Leather @ben_leather]

My first paper, "Hyperboloidal method for frequency-domain self-force calculations", has been published this week in @APSphysics @PhysRevD, Phys. Rev. D 105, 104033

You can find it here: https://t.co/8wwc0340TK

or here: https://t.co/ik3uLfvm6t

[BritGrav 23 @BritGrav23]

@LancUniPhysics Recording of Samuel Sanchez Lopez (@LancUniPhysics) on Quintessential Inflation in Palatini F(phi,R) Gravity https://t.co/mTc7HGYetf Adding the extra terms to the Lagrangian produces the desired inflation and form of dark energy #BritGrav22

[BritGrav 23 @BritGrav23]

Samuel Sanchez Lopez (@LancUniPhysics) is studying quintessence inflation in modified Palatini gravity. So far in agreement with observations, waiting on future experiements like EUCLID https://t.co/kRNsH3E4Cj #BritGrav22

[BritGrav 23 @BritGrav23]

@UoPCosmology Recording of Laura Iacconi (@UoPCosmology) on Multi-field Alpha-attractor Inflation: Turning Trajectories and Geometry https://t.co/QVXHgKwESf The power spectrum would be enhanced on small scales #BritGrav22

[BritGrav 23 @BritGrav23]

Laura Iacconi (@UoPCosmology) explains multifield inflation. the model with compatible with observations, and all primordial black holes would have evapourated by today https://t.co/kh4gf12PkN #BritGrav22

[BritGrav 23 @BritGrav23]

@mathsatshefuni Recording of Richard Daniel (@mathsatshefuni) on Scale Invariant, R^2 Inflation https://t.co/prnsUquivb They sould be a rapid drop in the observed power spectrum at small and large scales #BritGrav22

[BritGrav 23 @BritGrav23]

Richad Daniel (@mathsatshefuni) extends Starobinsky inflation and finds a theory where the vacuum expectation value introduces a mass scale that he introduces as the Planck mass https://t.co/GWSEc8HPay #BritGrav22

[BritGrav 23 @BritGrav23]

@mathsatshefuni Recording of Elsa Teixeira (@mathsatshefuni) on Coupled Quintessence in a Curved Universe https://t.co/W1JZLwhbjP Cosmological tensions are exacerbated in this model #BritGrav22

[BritGrav 23 @BritGrav23]

Elsa Teixeira (@mathsatshefuni) considers an interaction between dark energy and dark matte to resolve the Hubble tension. However, it only makes the tension worse #BritGrav22

[BritGrav 23 @BritGrav23]

@UoPCosmology Recording of Rafaela Gsponer (@UoPCosmology) on Tachyonic Instability Priors for Dark Energy https://t.co/lYGPIozx33 Be cautious in applying these priors as they might not offer benefits #BritGRav22

[BritGrav 23 @BritGrav23]

Rafaela Gsponer is a PhD student at @UoPCosmology. She wants to find prior constraints on Horndeski theories to make it easier to compare to observations. Tachyonic priors are too tricky to use. https://t.co/rNVMSXs7aF #BritGrav22

[BritGrav 23 @BritGrav23]

@NCLMathsStats Recording of @acwgough (@NCLMathsStats) on One Wavefunction to Rule the Multi-stream Regime https://t.co/ORyQJubw10 Wave dark matter allows insights into cold dark matter via the correspondence principle #BritGrav22

[BritGrav 23 @BritGrav23]

Alex Gough (@NCLMathsStats) is looking at wave dark matter (like axions). These offer rich phenomenology and insights into cold dark matter #BritGrav22

[BritGrav 23 @BritGrav23]

@mathsatshefuni Recording of Visakan Balakumar (@mathsatshefuni) on Quantum Superradiance on Static Black Hole Space-times https://t.co/Hf8tzLxnEg Superradiance prevents us from defining empty states at both Scriplus and Scriminus #BritGrav22

[BritGrav 23 @BritGrav23]

Visakan Balakumar talks about superadiance from Reissner–Nordström black holes. An empty quantum state can change to a particle flux leaving Reissner Nordström.@mathsatshefuni #BritGrav22

[BritGrav 23 @BritGrav23]

@UoNMaths Recording of Georgios Antoniou (@UoNMaths) on Stable Scalarized Black Holes in Generalized Scalar-Tensor Theories https://t.co/WJECHz38r3 Stable solutions are found, a hyperbolicity is improved #BritGrav22

[BritGrav 23 @BritGrav23]

Georgios Antoniou is looking for stable scalarizaed black holes. @UoNMaths https://t.co/zrShInCvFJ #BritGrav22

[BritGrav 23 @BritGrav23]

@mathsatshefuni Recording of George Montagnon (@mathsatshefuni) on
Hartle-Hawking States on Extremal Black Hole Spacetimes https://t.co/3cSaqv3n5f The Boulware and Hartle-Hawking states do not coincide #BritGrav22

[BritGrav 23 @BritGrav23]

George Montagnon is a PhD student at @mathsatshefuni . He explains why it is interesting to study extremal black holes for quantum field theories. #BritGrav22

[BritGrav 23 @BritGrav23]

@QMcosmology Recording of David Peinador Veiga (@QMcosmology) on Double Copy Structures in Classical Spacetimes https://t.co/0ZW7uHWtNY Type D and Type N spacetimes exhibit exhibit exact double copy relations #BritGrav22

[BritGrav 23 @BritGrav23]

David Peinador Veiga is a PhD student at @QMcosmology. He expains the double copy: Gravity = Gauge theory * Gauge theory. #BritGrav22

[BritGrav 23 @BritGrav23]

@QMULMaths Recording of @MarMinucci (@QMULMaths) on The Maxwell-scalar Field System Near Spatial Infinity https://t.co/bIGXwGGMV0 Nonlinear interaction makes fields more singular #BritGrav22

[BritGrav 23 @BritGrav23]

Marica Minucci is a PhD student at @QMULMaths. She is studying a Maxwell-scalar field at spatial infinity. #BritGrav22

[BritGrav 23 @BritGrav23]

@QMULMaths Recording of Mariem Magdy (@QMULMaths) on Asymptotic Charges for Spin-1 and Spin-2 Fields at the Critical Sets of Null Infinity https://t.co/OZ1Q0peacf Asymptotic charges are well defined iff certain conditions are met for the initial hypersurface #BritGrav22

[BritGrav 23 @BritGrav23]

Mariem Magdy Ali Mohamed is a PhD student at @QMULMaths . She is studying asymptotic symmetries at null infinity. https://t.co/cNLW52JOTj #BritGrav22

[BritGrav 23 @BritGrav23]

@QMULMaths Recording of Llibert Aresté Saló (@QMULMaths) on 3+1 Formulation of Einstein-scalar-Gauss-Bonnet Gravity https://t.co/5Lol2RNeGy Black holes have been formed starting from Kerr initial data! #BritGrav22

[BritGrav 23 @BritGrav23]

Llibert Aresté Saló is a PhD student at @QMULMaths. He wants to solve Einstein–scalar–Gauss–Bonnet field equations numerically. #BritGrav22

[BritGrav 23 @BritGrav23]

@QMcosmology Recording of Ashim Sen Gupta (@QMcosmology) on Nonlinear Horndeski Analysis with HiCOLA https://t.co/eQNEgjMnlB HiCOLA produces fast, approximate nonlinear matter power spectra #BritGrav22

[BritGrav 23 @BritGrav23]

Ashim Sen Gupta is analysing Horndeski gravity in comoving Lagrangian acceleration. This code enables tests with sureys like LSST @QMcosmology #BitGrav22

[BritGrav 23 @BritGrav23]

@UoN_Physics Recording of Chad Braddon (@UoN_Physics) on Using SELCIE to Investigate Screened Scalar Field Models Sourced by Complex Systems https://t.co/7mo3cMoqRn The SELCIE code can be used to study gravity with chameleon effects #BritGrav22

[BritGrav 23 @BritGrav23]

Chad Braddon is a PhD student at @UoN_Physics. He is studying modified theories of gravity with a chamelon mechanism. The code SELCIE can solve gravitational fields in these nonlinear theories https://t.co/xn63MeJzMr #BritGrav22