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Domain Walls, Charge and Dark Energy

HOW TO MAKE DOMAIN WALLS STICK. Domain Walls, Charge and Dark Energy. Jonathan Pearson Moriond - Cosmology March 2010. Jon Pearson Jodrell Bank Centre for Astrophysics University of Manchester www.jpoffline.com. Motivation. Acceleration problem

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Domain Walls, Charge and Dark Energy

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  1. HOW TO MAKE DOMAIN WALLS STICK Domain Walls, Charge and Dark Energy Jonathan PearsonMoriond - CosmologyMarch 2010 Jon Pearson Jodrell Bank Centre for Astrophysics University of Manchester www.jpoffline.com

  2. Motivation Acceleration problem Dark energy requires w < -1/3 from “something” Domain walls have wdw = v2 - 2/3 Standard domain wall paradigm Domain walls form in early universe (Kibble mechanism) Scale out of comoving volume n  1/t - only length scale: horizon size Frozen domain wall network as elastic dark energy Q: How to freeze? Mechanism to freeze network Symmetry currents

  3. Z2Goldstone model +  x - Kink solution Potential V()  + - Random initial conditions n  1/t “Scale out” t = 80 t = 160 t = 320 t = 640 t = 1280

  4. 2D domain wall coupledto charge Kinky Vortons, Battye & Sutcliffe, 2008 Model has global symmetry Solution to equations of motion Current-carrying charged condensate living on looped kink solution Loops have specific properties (radius, charge, current) Domain wall stabilized by symmetry currents

  5. Evolution results Random initial conditions homogeneous charge High chargefreezes network 160 320 640 1280 80 Time

  6. Evolution results Charge & current find walls Some loops have properties of kinky vortons  Re() Analyse loops Q |J|2

  7. Evolution results

  8. Evolution results Charge & current find walls Some loops have properties of kinky vortons  Re() Analyse loops Q |J|2

  9. Charged cubic anisotropy model Choose model parameterswith phase separation in mind Model has broken symmetry Conserved symmetry currents Junctions

  10. Charged cubic anisotropy model time No charge With charge Kinky vorton(from before)

  11. Charged cubic anisotropy model All at same timestep Increase Q(0) Charge & current find walls Prevent collapse

  12. Conclusions Dark energy description required Domain walls work if network freezes in Charge freezes walls in Elastic dark energy reinvigorated! Formation and evolution of kinky vortonsJCAP09(2009)039 R.A.Battye, J.A.Pearson, P.M.Sutcliffe and S.Pike Charge, junctions and the scaling dynamics of domain wall networks R.A.Battye and J.A.Pearson [in prep]

  13. HOW TO MAKE DOMAIN WALLS STICK Domain Walls, Charge and Dark Energy Jonathan PearsonMoriond - CosmologyMarch 2010 Jon Pearson Jodrell Bank Centre for Astrophysics University of Manchester www.jpoffline.com Formation and evolution of kinky vortonsJCAP09(2009)039 R.A.Battye, J.A.Pearson, P.M.Sutcliffe and S.Pike Charge, junctions and the scaling dynamics of domain wall networks R.A.Battye and J.A.Pearson [in prep]

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