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Inflatox Changelog

v0.10.1 bugfix

Bugfixes

  • fixed bug in calc_H_array python binding (discovered by @yr-chen2000)

v0.10.0 (💣BREAKING CHANGES💣)

Features

  • Added common subexpression elimination (cse) option for compiler
  • Equations of motion are now computed and compiled in addition to the consistency condition
  • Reworked symbolic simplification system
  • Added automatic numerical verification of basis orthonormality

Breaking Changes

  • Renamed SymbolicCalculation to InflationModelBuilder
  • Renamed SymbolicOutput to InflationModel

Non-breaking behaviour changes

  • InflationModelBuilder's constructor now has assertions=True by default
  • InflationCondition's constructor now has verify_basis=True by default

Bugfixes

  • fixed bug in documentation (thanks to TJMarchand)
  • fixed CRITICAL bug in definition of gradient (discovered by TJMarchand)
  • fixed bug in shortcut definition of second basis vector in 2-field inflation models (discovered by TJMarchand)

v0.9.1 bugfixes

General

  • Added unit tests
  • Added integration tests for models from arXiv:2405:11628
  • Added automated tests to CI

Bugfixes

  • fixed bug in documentation example
  • fixed incomprehensible error message when passing integers as start or stop value

v0.9.0 (💣BREAKING CHANGES💣)

API changes

  • Replaced new method on SymbolicCalculation with new_from_list. new_from_list still exists, but has been deprecated.
  • Removed all support for Einsteinpy-related API's
  • Added support for passing custom compiler/linker flags directly to zigcc using the compiler_flags option on the Compiler class.
  • Added experimental support for compiling inflatox binaries with special functions by linking the GNU Scientific Library (GSL).
  • Added support for transpiling Bessel functions using the GSL
  • Added support for transpiling Hypergeometric functions (small subset) using the GSL

General

  • Removed dependency on Einsteinpy (huge dependency reduction)
  • Started migration to new PyO3 bound API (slight performance improvement)
  • Improved (zig) compiler output

Bugfixes

  • fixed assertions

v0.8.2 printing bugfix

General

  • added assertion error messages

Bugfixes

  • fixed bug with printing sympy expressions outside IPython environments

v0.8.1 Synchronise

Version 0.8.1 is identical to version 0.8.0. It has come to our attention that a duplicate 0.8.0 published in March 2024 (rather than the May 2024 real 0.8.0) was unintentionally published to PyPi. Version 0.8.1 should remedy this issue.

v0.8.0 (💣BREAKING CHANGES💣)

General

  • Bumped the minimum required python version from 3.7 to 3.8. This was already the case (due to the usage of std's typing lib), but not reflected in the package manifest.
  • Improved and updated documentation where necessary
  • Added docs.md documentation file
  • Added builds.md wiht build instructions

Mathematical changes

  • Moved away from the $\kappa=3$ paradigm to a more sensible calculation for $\varepsilon_H$: $$ \varepsilon_H=3 \times \frac{\varepsilon_V - 1/2 (V_t/V)^2} {\varepsilon_V+V_{tt}/V - 1/2 (V_t/V)^2} $$ Where $V_{tt}$ is calculated using the assumption $\tan\delta=V_{vw}/V_{vv}$ and $1/2(V_t/V)^2= \varepsilon_V\sin^2\delta$. Note that this new equation gives different results: it is less restrictive than the previous $\kappa=3$ paradigm, although it is better motivated from a theoretical standpoint.
  • Replaced $\varepsilon_H$ calculation with $\eta_{\parallel}$ calculation, where $\eta_{\parallel}$ is calculated as: $$ \eta_{\parallel}=\omega\tan\delta -3 $$

API changes

  • Renamed AnguelovaLazaroiuCondition to GeneralisedAL
  • SymbolicCalculation no longer requires the vector $w \perp \nabla V$ to be speficied by default (it is still possible to do so as an option)

Upgrades

  • Updated Rayon 1.8 -> 1.10
  • Upgraded PyO3 0.20 -> 0.21
  • Upgraded numpy 0.20 -> 0.21

v0.7.0 - major refactor (💣BREAKING CHANGES💣)

API changes

  • Added functionality to calculate the potential slow-roll parameter $\varepsilon_V$
  • Added functionality to calculate $\varepsilon_H$ assuming the AL condition holds.
  • Added functionality to calculate $\eta_{\parallel}$ and $\eta_H$ assuming the AL condition holds.
  • Added new complete_analysis() method that is able to calculate six dynamical quantities at once. This cuts computation time by about a factor six.
  • Added consistency_only() method for situations when full_analysis() is overkill (no real speed-up).
  • Added consistency_only_old() method for computing the original AL condition only (not included in complete_analysis)
  • Added epsilon_v_only() method for computing the first potential slow-roll parameter.
  • Removed evaluate() method of AnguelovaLazaroiuCondition. Functionality replaced by consistency_only().
  • Removed calc_delta() method of AnguelovaLazaroiuCondition. Functionality replaced by complete_analysis().
  • Removed calc_epsilon() method of AnguelovaLazaroiuCondition. Functionality replaced by complete_analysis() and epsilon_v_only().
  • Removed calc_omega() method of AnguelovaLazaroiuCondition. Functionality replaced by complete_analysis().

Mathematical changes

  • All consistency conditions are now returned in the following format: $$ \rm{out}=\left|\frac{|\rm{rhs}|-|\rm{lhs}|}{|\rm{rhs}|+|\rm{lhs}|}\right| $$ where $\rm{lhs}$ is the left-hand side of the consistency condition and $\rm{rhs}$ the right-hand side.
  • The characteristic angle $\delta$ is now returned in the range $[0,\pi/2]$ since the sign of the angle between $w^a$ and $t^a$ is arbitrary since the given that the choice of $w^a$ is arbitrary.

General

  • Reworked console output

Upgrades

  • Upgraded rayon 1.7.0 -> 1.8.0

v0.6.0 - More quantities: $\varepsilon_H$ and $\omega$

  • Specified that package is only compatible with python 3.7 - 3.11, because no version of Numba dependency (which is a dependency of EinsteinPy) that is compatible with python 3.12 has been released yet. Package still interfaces with rust using the stable python 3.7 ABI. This will not be changed until the 3.7 ABI is deprecated.
  • Added hesse_array method that allows calculating the hesse matrix (for an arbitrary number of field-space dimensions) at all points in a given field- space array.
  • added functionality to calculate the turn rate $\omega$ under the assumption that the slow-roll parameters are small.
  • added functionality to calculate the hesse matrix for a whole range of field space values at once.
  • Upgraded numpy 0.19 -> 0.20
  • Upgraded PyO3 0.19 -> 0.20

v0.5.0 - Quantum diffusion

  • breaking ABI change (new symbols)
  • added functionality to calculate if gradient of potential flips sign (goes to zero). This is relevant for those looking for areas where quantum diffusion dominates over the background
  • improved error messages
  • moved examples to different repository

v0.4.1

  • simplified build system
  • inflatox now uses pythons ABI3, specifically version 3.7
  • added (optional) progress bars

v0.4.0 - $\delta$ calculations

  • added functionality to calculate the $\delta$ slow-roll, rapid-turn parameter (see future publication)
  • yanked the inflatox crate from crates.io. All rust code is now considered internal

v0.3.0 - Higher order conditions

  • added higher-order consistency conditions

v0.2.1

  • Bugfixes

v0.2.0 - Zig

  • replaced platform native C compiler with pip-bundled zig-cc compiler

v0.1.0 - Initial Release