Andreas Stefl
Andreas Stefl
`EigenStepper` (and extensions) cannot be easily extended for dense environment covariance transport
The complication I encountered in ACTS is that we do not have a covariance matrix while stepping but only the accumulated jaccobian. We can either accumulate a free param covariance...
`EigenStepper` (and extensions) cannot be easily extended for dense environment covariance transport
I have an implementation here for the MSC covariance https://github.com/acts-project/acts/blob/862d739e5929eda2f96fc7f38a6f8378269455e3/Core/include/Acts/Propagator/detail/GenericDenseEnvironmentExtension.hpp#L548-L557 I used the free representation here but I think bound should be also possible. In general I don't think this...
`EigenStepper` (and extensions) cannot be easily extended for dense environment covariance transport
I fear it is not possible to replace the addition with a jacobian transform - also I am not sure if this would play nice with transporting this additional term...
`EigenStepper` (and extensions) cannot be easily extended for dense environment covariance transport
Right now I have to do it at every step but that seems very wasteful in terms of CPU. I plan to accumulate the material during the stepping and when...
`EigenStepper` (and extensions) cannot be easily extended for dense environment covariance transport
I don't mean to necessarily combine all the material into one thin slab but to calculate the additional term in one go and just collecting the material in a vector...
`EigenStepper` (and extensions) cannot be easily extended for dense environment covariance transport
I was also worried about that and I didn't prove it but I convinced myself by the fact that the MSC is symmetric along the momentum and it does not...
`EigenStepper` (and extensions) cannot be easily extended for dense environment covariance transport
Right that would lead to different results but if we put the transport effect of the jacobian into the total MSC covariance (combining multiple steps into one) it should give...
can be closed for now
2 problems here: - codecov is failing - ci bridge wont run @paulgessinger can you add @hrzhao76 to the bridge user list?
`CI Bridge / build_exatrkx ` is failing https://github.com/acts-project/acts/pull/2925/checks?check_run_id=22177563102 @hrzhao76