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[{"model": "core.projectfund", "pk": 25157, "fields": {"project": 2344, "organisation": 21, "amount": 0, "start_date": "2018-09-19", "end_date": "2022-03-30", "raw_data": 39587}}]
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[{"model": "core.projectfund", "pk": 17260, "fields": {"project": 2344, "organisation": 21, "amount": 0, "start_date": "2018-09-19", "end_date": "2022-03-30", "raw_data": 10139}}]
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| April 11, 2022, 3:45 a.m. |
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[{"model": "core.projectorganisation", "pk": 64754, "fields": {"project": 2344, "organisation": 647, "role": "LEAD_ORG"}}]
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| April 11, 2022, 3:45 a.m. |
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[{"model": "core.projectperson", "pk": 39923, "fields": {"project": 2344, "person": 3229, "role": "STUDENT_PER"}}]
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| April 11, 2022, 3:45 a.m. |
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[{"model": "core.projectperson", "pk": 39922, "fields": {"project": 2344, "person": 3230, "role": "SUPER_PER"}}]
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| April 11, 2022, 1:47 a.m. |
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{"title": ["", "First order phase transitions beyond the Standard Model"], "description": ["", "\nThe direct detection of gravitational waves by the LIGO/Virgo collaboration shows that a new window on the\nUniverse is now open, with the potential to revolutionise our knowledge of its history. Equally, the discovery\nof the Higgs particle at the Large Hadron Collider (LHC) has triggered a hunt for a complete understanding of\nthe origin of elementary particle masses. These most fundamental strands of physics are linked in the early\nUniverse at around 10 picoseconds, when the electroweak phase transition took place, and the Higgs field\n"turned on". This process could have been a violent one, generating gravitational waves detectable by spacebased\ngravitational wave detectors with sensitivity in the millihertz band. The European Space Agency has\nrecently approved just such a mission, Laser Interferometer Space Antenna (LISA), which will launch by\n2034. LISA has the potential to directly probe of the conditions of the Universe at an age of about 10\npicoseconds, and at the same time the physics of mass generation. .\nAn early Universe first-order phase transition is characterised as follows. The energy scale is set by the\ncritical temperature Tc, below which bubbles of the Higgs phase can spontaneously nucleate and grow. The\nbubble nucleation rate per unit volume is calculable in terms of the transition rate parameter b, the rate of the\nchange of the activation barrier. The third parameter a is roughly the potential energy in the Higgs field\nrelative to the thermal energy, which controls the fluid shear stresses, the source for the gravitational waves.\nThe efficiency depends on the final parameter, the speed with which the phase boundary expands vw.\nThere is a strong drive towards the determination of the gravitational wave power spectrum as a function of\nthe parameters (Hn,a,b,vw), This project aims to link this programme back to fundamental physics by\nimproving the computation of the parameters (Hn,a,b,vw) from the masses and coupling constants of\nunderlying particle physics models, so that the power spectrum can be computed with 20% accuracy.\nThe wall speed vw is the parameter with the most uncertainty, up to a factor two for low values. This project\nwill develop and apply new methods to improve the accuracy of the vw calculation to the required 5% level.\nLattice Monte Carlo techniques have good potential, as they treat properly the IR modes of the W and Z\nfields which are the source of significant uncertainty. The project will explore the use the holographic\napproach to strongly-interacting field theories to compute the thermal activation rate from a solution to the\ndual 5-dimensional gravitational theory.\n\n"], "extra_text": ["", "\n\n\n\n"], "status": ["", "Active"]}
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| April 11, 2022, 1:47 a.m. |
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{"external_links": [8415]}
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| April 11, 2022, 1:47 a.m. |
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[{"model": "core.project", "pk": 2344, "fields": {"owner": null, "is_locked": false, "coped_id": "f4e775cd-7788-4239-8a4e-3395f20c9db8", "title": "", "description": "", "extra_text": "", "status": "", "start": null, "end": null, "raw_data": 10122, "created": "2022-04-11T01:33:42.533Z", "modified": "2022-04-11T01:33:42.533Z", "external_links": []}}]
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