$Id: README,v 1.5 2021/02/01 02:09:55 brandenb Exp $

tex directories:
  tex/emma/k1GW/idl
  tex/tina/QCD-GWs

run directories:
  pencil-code/emma/GW/idl


want relation: Omega_GW = [q*Omega_M/k_eff]^2
               Omega_GW = [q*Omega_K/k_eff]^2
driven turbulence, either hydro, or magnetic

? Literature: why is kf smaller

T.~Kahniashvili, L.~Kisslinger and T.~Stevens,
``Gravitational Radiation Generated by Magnetic Fields in Cosmological Phase Transitions,''
Phys.\ Rev.\ D {\bf 81} 023004 (2010).

L. Kisslinger and T. Kahniashvili\yprd{2015}{92}{043006}
{Polarized gravitational waves from cosmological phase transitions}

know: kf smaller, decay slower, but also driving is slower
therefore: if we are interested in the same (saturation) amplitude after
certain time, then we would need stronger driving.

-rwxr-xr-x 1 brandenb brandenb  800 dec  3 19:04 M64sig0_k6_wav10c/run.in
k1=10, kf=6*10=60, f0=1.5e-2, relhel=0, magnetic forcing, tforce_stop=2, eta=2e-3
EEM=
EEGW=

-rwxr-xr-x 1 brandenb brandenb  798 dec  3 18:56 M64sig0_k6_wav10b/run.in
f0=3e-2

-rwxr-xr-x 1 brandenb brandenb  797 dec  3 18:52 M64sig0_k6_wav10a/run.in
f0=6e-2, too short, blew up

-rwxr-xr-x 1 brandenb brandenb  797 dec  3 18:44 M64sig0_k6_wav1d/run.in
k1=1, f0=6e-2

-rwxr-xr-x 1 brandenb brandenb  797 dec  3 18:41 M64sig0_k6_wav1c/run.in
eta=nu=1e-2 (5 times more)

-rwxr-xr-x 1 brandenb brandenb  797 dec  3 18:39 M64sig0_k6_wav1b/run.in
-rwxr-xr-x 1 brandenb brandenb  798 dec  3 18:29 M64sig0_k6_wav1a/run.in
-rwxr-xr-x 1 brandenb brandenb  798 dec  3 18:23 M32sig0_k6_wav1a/run.in
-rwxr-xr-x 1 brandenb brandenb 1047 dec  1 09:42 M512sig0_k6_wav30/run.in

