53 #include "star_rot_dirac.h" 67 dnn - 6.*
nn * dln_psi, 0) ;
85 beta_new = sou_beta_df.
poisson() ;
Map & mp
Mapping associated with the star.
const Vector_divfree & div_free(const Metric &) const
Returns the div-free vector in the Helmholtz decomposition.
Standard units of space, time and mass.
Flat metric for tensor calculation.
Sym_tensor_trans hh
is defined by .
Tensor field of valence 1.
const Tensor_sym & get_delta() const
Returns the tensor which defines the connection with respect to the flat one: is the difference bet...
void set_dzpuis(int)
Modifies the dzpuis flag.
Scalar psi4
Conformal factor .
virtual const Connection & connect() const
Returns the connection.
const Scalar & divergence(const Metric &) const
The divergence of this with respect to a Metric .
Vector_divfree poisson() const
Computes the solution of a vectorial Poisson equation with *this as a source: .
Tenseur contract(const Tenseur &, int id1, int id2)
Self contraction of two indices of a Tenseur .
const Tensor & derive_cov(const Metric &gam) const
Returns the covariant derivative of this with respect to some metric .
virtual void inc_dzpuis(int inc=1)
Increases by inc units the value of dzpuis and changes accordingly the values in the compactified ext...
Scalar nn
Lapse function N .
void solve_shift(Vector &shift_new) const
Solution of the shift equation for rotating stars in Dirac gauge.
Scalar & set(int)
Read/write access to a component.
const Vector & derive_cov(const Metric &gam) const
Returns the gradient (1-form = covariant vector) of *this
Vector j_euler
Momentum density 3-vector with respect to the Eulerian observer.
const Metric_flat & flat_met_spher() const
Returns the flat metric associated with the spherical coordinates and with components expressed in th...