biostudies-literatureUnknown12(1)De Karmakar SWe investigate collective properties of a large system of soft self-propelled inertial disks with active Langevin dynamics simulation in two dimensions. Rotational inertia of the disks is found to favor motility induced phase separation (MIPS), due to increased effective persistence of the disks. The MIPS phase diagram in the parameter space of rotational inertia and disk softness is reported over a range of values of translation inertia and self-propulsion strength of the disks. Our analytical prediction of the phase boundary between the homogeneous (no-MIPS) and MIPS state in the limit of small and large rotational inertia is found to agree with the numerical data over a large range of translational inertia. Shape of the high density MIPS phase is found to change from circular to rectangScientific reports22563https://www.ebi.ac.uk/biostudies/studies/S-EPMC9800414biostudies-literatureCollective behavior of soft self-propelled disks with rotational inertia.PMC9800414Ganesh RChugh ADe Karmakar SfalseCollective behavior of soft self-propelled disks with rotational inertia.We investigate collective properties of a large system of soft self-propelled inertial disks with active Langevin dynamics simulation in two dimensions. Rotational inertia of the disks is found to favor motility induced phase separation (MIPS), due to increased effective persistence of the disks. The MIPS phase diagram in the parameter space of rotational inertia and disk softness is reported over a range of values of translation inertia and self-propulsion strength of the disks. Our analytical prediction of the phase boundary between the homogeneous (no-MIPS) and MIPS state in the limit of small and large rotational inertia is found to agree with the numerical data over a large range of translational inertia. Shape of the high density MIPS phase is found to change from circular to rectang2022-01-01T00:00:00Z2022 Dec2025-04-19T18:07:38.531Z2025-04-19T18:07:38.531ZS-EPMC98004143658174310.1038/s41598-022-26994-2