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dynamics of the Einstein equations with a minimally coupled scalar field with monomial potentials <jats:inline-formula>\n              <jats:alternatives>\n                <jats:tex-math>$$V(\\phi )=\\frac{(\\lambda \\phi )^{2n}}{2n}$$<\/jats:tex-math>\n                <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                  <mml:mrow>\n                    <mml:mi>V<\/mml:mi>\n                    <mml:mrow>\n                      <mml:mo>(<\/mml:mo>\n                      <mml:mi>\u03d5<\/mml:mi>\n                      <mml:mo>)<\/mml:mo>\n                    <\/mml:mrow>\n                    <mml:mo>=<\/mml:mo>\n                    <mml:mfrac>\n                      <mml:msup>\n                        <mml:mrow>\n                          <mml:mo>(<\/mml:mo>\n                          <mml:mi>\u03bb<\/mml:mi>\n                          <mml:mi>\u03d5<\/mml:mi>\n                          <mml:mo>)<\/mml:mo>\n                        <\/mml:mrow>\n                        <mml:mrow>\n                          <mml:mn>2<\/mml:mn>\n                          <mml:mi>n<\/mml:mi>\n                        <\/mml:mrow>\n                      <\/mml:msup>\n                      <mml:mrow>\n                        <mml:mn>2<\/mml:mn>\n                        <mml:mi>n<\/mml:mi>\n                      <\/mml:mrow>\n                    <\/mml:mfrac>\n                  <\/mml:mrow>\n                <\/mml:math>\n              <\/jats:alternatives>\n            <\/jats:inline-formula>, <jats:inline-formula>\n              <jats:alternatives>\n                <jats:tex-math>$$\\lambda &gt;0$$<\/jats:tex-math>\n                <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                  <mml:mrow>\n                    <mml:mi>\u03bb<\/mml:mi>\n                    <mml:mo>&gt;<\/mml:mo>\n                    <mml:mn>0<\/mml:mn>\n                  <\/mml:mrow>\n                <\/mml:math>\n              <\/jats:alternatives>\n            <\/jats:inline-formula>, <jats:inline-formula>\n              <jats:alternatives>\n                <jats:tex-math>$$n\\in {\\mathbb {N}}$$<\/jats:tex-math>\n                <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                  <mml:mrow>\n                    <mml:mi>n<\/mml:mi>\n                    <mml:mo>\u2208<\/mml:mo>\n                    <mml:mi>N<\/mml:mi>\n                  <\/mml:mrow>\n                <\/mml:math>\n              <\/jats:alternatives>\n            <\/jats:inline-formula>, interacting with a perfect fluid with linear equation of state <jats:inline-formula>\n              <jats:alternatives>\n                <jats:tex-math>$$p_{\\textrm{pf}}=(\\gamma _{\\textrm{pf}}-1)\\rho _{\\textrm{pf}}$$<\/jats:tex-math>\n                <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                  <mml:mrow>\n                    <mml:msub>\n                      <mml:mi>p<\/mml:mi>\n                      <mml:mtext>pf<\/mml:mtext>\n                    <\/mml:msub>\n                    <mml:mo>=<\/mml:mo>\n                    <mml:mrow>\n                      <mml:mo>(<\/mml:mo>\n                      <mml:msub>\n                        <mml:mi>\u03b3<\/mml:mi>\n                        <mml:mtext>pf<\/mml:mtext>\n                      <\/mml:msub>\n                      <mml:mo>-<\/mml:mo>\n                      <mml:mn>1<\/mml:mn>\n                      <mml:mo>)<\/mml:mo>\n                    <\/mml:mrow>\n                    <mml:msub>\n                      <mml:mi>\u03c1<\/mml:mi>\n                      <mml:mtext>pf<\/mml:mtext>\n                    <\/mml:msub>\n                  <\/mml:mrow>\n                <\/mml:math>\n              <\/jats:alternatives>\n            <\/jats:inline-formula>, <jats:inline-formula>\n              <jats:alternatives>\n                <jats:tex-math>$$\\gamma _{\\textrm{pf}}\\in (0,2)$$<\/jats:tex-math>\n                <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                  <mml:mrow>\n                    <mml:msub>\n                      <mml:mi>\u03b3<\/mml:mi>\n                      <mml:mtext>pf<\/mml:mtext>\n                    <\/mml:msub>\n                    <mml:mo>\u2208<\/mml:mo>\n                    <mml:mrow>\n                      <mml:mo>(<\/mml:mo>\n                      <mml:mn>0<\/mml:mn>\n                      <mml:mo>,<\/mml:mo>\n                      <mml:mn>2<\/mml:mn>\n                      <mml:mo>)<\/mml:mo>\n                    <\/mml:mrow>\n                  <\/mml:mrow>\n                <\/mml:math>\n              <\/jats:alternatives>\n            <\/jats:inline-formula>, in flat Robertson\u2013Walker spacetimes. The interaction is a friction-like term of the form <jats:inline-formula>\n              <jats:alternatives>\n                <jats:tex-math>$$\\Gamma (\\phi )=\\mu \\phi ^{2p}$$<\/jats:tex-math>\n                <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                  <mml:mrow>\n                    <mml:mi>\u0393<\/mml:mi>\n                    <mml:mrow>\n                      <mml:mo>(<\/mml:mo>\n                      <mml:mi>\u03d5<\/mml:mi>\n                      <mml:mo>)<\/mml:mo>\n                    <\/mml:mrow>\n                    <mml:mo>=<\/mml:mo>\n                    <mml:mi>\u03bc<\/mml:mi>\n                    <mml:msup>\n                      <mml:mi>\u03d5<\/mml:mi>\n                      <mml:mrow>\n                        <mml:mn>2<\/mml:mn>\n                        <mml:mi>p<\/mml:mi>\n                      <\/mml:mrow>\n                    <\/mml:msup>\n                  <\/mml:mrow>\n                <\/mml:math>\n              <\/jats:alternatives>\n            <\/jats:inline-formula>, <jats:inline-formula>\n              <jats:alternatives>\n                <jats:tex-math>$$\\mu &gt;0$$<\/jats:tex-math>\n                <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                  <mml:mrow>\n                    <mml:mi>\u03bc<\/mml:mi>\n                    <mml:mo>&gt;<\/mml:mo>\n                    <mml:mn>0<\/mml:mn>\n                  <\/mml:mrow>\n                <\/mml:math>\n              <\/jats:alternatives>\n            <\/jats:inline-formula>, <jats:inline-formula>\n              <jats:alternatives>\n                <jats:tex-math>$$p\\in {\\mathbb {N}}\\cup \\{0\\}$$<\/jats:tex-math>\n                <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                  <mml:mrow>\n                    <mml:mi>p<\/mml:mi>\n                    <mml:mo>\u2208<\/mml:mo>\n                    <mml:mi>N<\/mml:mi>\n                    <mml:mo>\u222a<\/mml:mo>\n                    <mml:mo>{<\/mml:mo>\n                    <mml:mn>0<\/mml:mn>\n                    <mml:mo>}<\/mml:mo>\n                  <\/mml:mrow>\n                <\/mml:math>\n              <\/jats:alternatives>\n            <\/jats:inline-formula>. The analysis relies on the introduction of a new regular 3-dimensional dynamical systems\u2019 formulation of the Einstein equations on a compact state space, and the use of dynamical systems\u2019 tools such as quasi-homogeneous blow-ups and averaging methods involving a time-dependent perturbation parameter.<\/jats:p>","DOI":"10.1007\/s10884-023-10318-7","type":"journal-article","created":{"date-parts":[[2023,11,6]],"date-time":"2023-11-06T05:01:29Z","timestamp":1699246889000},"page":"1637-1705","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Dynamics of Interacting Monomial Scalar Field Potentials and Perfect Fluids"],"prefix":"10.1007","volume":"37","author":[{"given":"Artur","family":"Alho","sequence":"first","affiliation":[]},{"given":"Vitor","family":"Bessa","sequence":"additional","affiliation":[]},{"given":"Filipe C.","family":"Mena","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2023,11,6]]},"reference":[{"key":"10318_CR1","unstructured":"Brehm, B.: Bianchi VIII and IX vacuum cosmologies: Almost every solution forms particle horizons and converges to the Mixmaster attractor. 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