Software Open Access

CppTransport 2016.3

Seery, David


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  <identifier identifierType="DOI">10.5281/zenodo.61237</identifier>
  <creators>
    <creator>
      <creatorName>Seery, David</creatorName>
      <givenName>David</givenName>
      <familyName>Seery</familyName>
      <affiliation>University of Sussex</affiliation>
    </creator>
  </creators>
  <titles>
    <title>CppTransport 2016.3</title>
  </titles>
  <publisher>Zenodo</publisher>
  <publicationYear>2016</publicationYear>
  <subjects>
    <subject>inflation</subject>
    <subject>early universe cosmology</subject>
    <subject>automated tools</subject>
  </subjects>
  <dates>
    <date dateType="Issued">2016-08-31</date>
  </dates>
  <resourceType resourceTypeGeneral="Software"/>
  <alternateIdentifiers>
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    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsNewVersionOf">10.5281/zenodo.59403</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsSupplementedBy">10.5281/zenodo.61239</relatedIdentifier>
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  <rightsList>
    <rights rightsURI="https://opensource.org/licenses/GPL-2.0">GNU General Public License v2.0 only</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">&lt;p&gt;2016.3&amp;nbsp;release of the&amp;nbsp;&lt;strong&gt;CppTransport&lt;/strong&gt;&amp;nbsp;platform&amp;nbsp;for computation of correlation functions generated during an inflationary epoch in the early universe.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Platform improvements &amp;ndash; translator&lt;/strong&gt;&lt;/p&gt;

&lt;ul&gt;
	&lt;li&gt;&lt;strong&gt;Backwards incompatible:&lt;/strong&gt;&amp;nbsp;change calculation of model UIDs to use only the identifier, name, license and revision. Other metadata is no&amp;nbsp;longer used. This allows the metadata to be modified (eg. add references) without changing the UID.&lt;/li&gt;
	&lt;li&gt;Implement &amp;lsquo;A-tilde&amp;rsquo; tensor concept. This contains only the slow&amp;nbsp;contributions to the A-tensor and is needed to compute initial conditions in QSFI-like scenarios.&lt;/li&gt;
&lt;/ul&gt;

&lt;p&gt;&lt;strong&gt;Platform improvements &amp;ndash; runtime&lt;/strong&gt;&lt;/p&gt;

&lt;ul&gt;
	&lt;li&gt;Improve calculation of initial conditions. These now include the leading term in (&lt;em&gt;k&lt;/em&gt;/&lt;em&gt;aH&lt;/em&gt;) from each possible source: dimension 5 [fast-&lt;em&gt;A&lt;/em&gt;,&amp;nbsp;&lt;em&gt;C&lt;/em&gt;], dimension 4 [&lt;em&gt;B&lt;/em&gt;] and dimension 3 [slow-&lt;em&gt;A&lt;/em&gt;]. The dimension 5 operators dominate in most models, but the large coupling makes dimension 3 contributions important in QSFI-like scenarios.&lt;/li&gt;
&lt;/ul&gt;

&lt;p&gt;&lt;strong&gt;Bug fixes &amp;ndash; translator&lt;/strong&gt;&lt;/p&gt;

&lt;ul&gt;
	&lt;li&gt;Fix incorrect handling of unary minus in model description files.&lt;/li&gt;
	&lt;li&gt;Improve handling of context data during error reports. Previously, the reported context could slightly misrepresent the location of an error.&lt;/li&gt;
	&lt;li&gt;Fix incorrect conversion of hexadecimal and octal literals in model description files.&lt;/li&gt;
&lt;/ul&gt;

&lt;p&gt;&lt;strong&gt;Bug fixes &amp;ndash; runtime&lt;/strong&gt;&lt;/p&gt;

&lt;ul&gt;
	&lt;li&gt;Improve handling of exceptions generated during repository creation. These normally indicate a mismatching number of parameters or initial conditions, and are now reported correctly to the user.&lt;/li&gt;
	&lt;li&gt;Improve handling of exception conditions during integration.&lt;/li&gt;
	&lt;li&gt;Fix incorrect labelling in&amp;nbsp;&lt;strong&gt;background_line&lt;/strong&gt;.&lt;/li&gt;
	&lt;li&gt;Fix incorrect labelling in HTML report for&amp;nbsp;&lt;strong&gt;largest_u3_line&lt;/strong&gt;.&lt;/li&gt;
	&lt;li&gt;Fix regression which caused the terminal width not to be detected correctly for multicolumn key-value output.&amp;nbsp;&lt;/li&gt;
&lt;/ul&gt;</description>
  </descriptions>
  <fundingReferences>
    <fundingReference>
      <funderName>European Commission</funderName>
      <funderIdentifier funderIdentifierType="Crossref Funder ID">10.13039/501100000780</funderIdentifier>
      <awardNumber awardURI="info:eu-repo/grantAgreement/EC/FP7/308082/">308082</awardNumber>
      <awardTitle>Precision tests of the inflationary scenario</awardTitle>
    </fundingReference>
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