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Neutrino spin oscillations in gravitational fields

Neutrino spin oscillations in gravitational fields

๋ณธ ๋…ผ๋ฌธ์€ ์ค‘์„ฑ๋ฏธ์ž์˜ ์Šคํ•€ ์ง„๋™ ํ˜„์ƒ์„ ๋‹ค์–‘ํ•œ ์ค‘๋ ฅ์žฅ ์กฐ๊ฑด ํ•˜์—์„œ ์—ฐ๊ตฌํ•œ ๊ฒฐ๊ณผ๋ฅผ ๋ณด๊ณ ํ•˜๊ณ  ์žˆ์Šต๋‹ˆ๋‹ค. ํŠนํžˆ, ๋ฆฌ์Šค๋„ˆ ๋…ธ๋“œ์ŠคํŠธ๋กฌ(RN) ๋ฐ ์ผ€๋ฅด ๋ฐฐ๊ฒฝ์ด๋ผ๋Š” ๋‘ ๊ฐ€์ง€ ์ฃผ์š” ์ค‘๋ ฅ์žฅ ๋ชจ๋ธ์„ ์‚ฌ์šฉํ•˜์—ฌ ์ค‘์„ฑ๋ฏธ์ž ์Šคํ•€ ์ง„๋™์˜ ํŠน์„ฑ์„ ๋ถ„์„ํ•˜์˜€์Šต๋‹ˆ๋‹ค. 1. ์ค‘์„ฑ๋ฏธ์ž์˜ ์ค‘์š”์„ฑ ์ค‘์„ฑ๋ฏธ์ž๋Š” ์ž…์ž ๋ฌผ๋ฆฌํ•™, ์šฐ์ฃผ๋ก , ์ฒœ์ฒด๋ฌผ๋ฆฌํ•™ ๋“ฑ ๋‹ค์–‘ํ•œ ๋ถ„์•ผ์—์„œ ์ค‘์š”ํ•œ ์—ญํ• ์„ ํ•ฉ๋‹ˆ๋‹ค. ํŠนํžˆ, ์ค‘์„ฑ๋ฏธ์ž์˜ ์ง„๋™ ํ˜„์ƒ์€ ํƒœ์–‘ ์ค‘์„ฑ๋ฏธ์ž์™€ ๋Œ€๊ธฐ ์ค‘์„ฑ๋ฏธ์ž ๋ฌธ์ œ๋ฅผ ์„ค๋ช…ํ•˜๋Š” ๋ฐ ์‚ฌ์šฉ๋˜๋ฉฐ, ์ด๋Š” ํ‘œ์ค€ ๋ชจํ˜• ์ด์™ธ์˜ ๋ฌผ๋ฆฌํ•™์  ํ˜„์ƒ์„ ์ดํ•ดํ•˜๋Š” ์ฒซ๊ฑธ์Œ์ด ๋ฉ๋‹ˆ๋‹ค. 2. ๋ฆฌ์Šค๋„ˆ ๋…ธ๋“œ์ŠคํŠธ๋กฌ(RN) ๋ฐฐ๊ฒฝ

HEP-TH General Relativity Astrophysics HEP-PH
Can Mathisson-Papapetrou equations give clue to some problems in astrophysics?

Can Mathisson-Papapetrou equations give clue to some problems in astrophysics?

๋งค๋ ฅ์ ์ธ ํ•œ๊ธ€ ์ œ๋ชฉ: ํŽ˜๋ฅด๋ฏธ ์šด์†ก๊ณผ ๋งˆ์‹œ๋ชฌ ํŒŒํŒŒํŽ˜ํŠธ๋กœ ๋ฐฉ์ •์‹: ์ฒœ์ฒด๋ฌผ๋ฆฌํ•™์  ํ•จ์˜ ์ดˆ๋ก ์ „์ฒด ๋ฒˆ์—ญ ๋ฐ ์ •๋ฆฌ: ๋ณธ ๋…ผ๋ฌธ์€ Mathisson Papapetrou (MPD) ๋ฐฉ์ •์‹์ด ํšŒ์ „ํ•˜๋Š” ์ž…์ž์˜ ์ผ๋ฐ˜ ์ƒ๋Œ€์„ฑ ์ด๋ก ์  ์šด๋™์„ ์„ค๋ช…ํ•˜๋ฉฐ, ํŠนํžˆ ๊ณ ์†์œผ๋กœ ํšŒ์ „ํ•˜๋Š” ์ž…์ž์—์„œ ๋‚˜ํƒ€๋‚˜๋Š” ๊ฐ•ํ•œ ํ•ญ์ค‘๋ ฅ ํšจ๊ณผ๋ฅผ ๋ถ„์„ํ•ฉ๋‹ˆ๋‹ค. ์ด๋Ÿฌํ•œ ํŠน์„ฑ์ด ์ฒœ์ฒด๋ฌผ๋ฆฌํ•™์  ํ˜„์ƒ, ์˜ˆ๋ฅผ ๋“ค์–ด OPERA ์‹คํ—˜ ๊ฒฐ๊ณผ์™€ ์—ฐ๊ด€๋  ์ˆ˜ ์žˆ๋‹ค๋Š” ๊ฐ€๋Šฅ์„ฑ์„ ์ œ์•ˆํ•˜๊ณ  ์žˆ์Šต๋‹ˆ๋‹ค. ๋…ผ๋ฌธ์€ MPD ๋ฐฉ์ •์‹์ด ์ผ๋ฐ˜ ์ƒ๋Œ€์„ฑ ์ด๋ก ์  ๋””๋ž™ ๋ฐฉ์ •์‹์˜ ๊ณ ์ „์  ๊ทผ์‚ฌ์น˜์ž„์„ ๊ฐ•์กฐํ•˜๋ฉฐ, ํŽ˜๋ฅด๋ฏธ ์šด๋ฐ˜ ๊ฐœ๋…์„ ํ†ตํ•ด ์ •ํ™•ํ•œ ์ผ

HEP-TH General Relativity Astrophysics
QCDMAPT_F: Fortran version of QCDMAPT package

QCDMAPT_F: Fortran version of QCDMAPT package

QCDMAPT F๋Š” ์–‘์ž ์ƒ‰์—ญํ•™(QCD) ๋ถ„์•ผ์—์„œ ์ค‘์š”ํ•œ ์—ญํ• ์„ ํ•˜๋Š” ํ”„๋กœ๊ทธ๋žจ ํŒจํ‚ค์ง€๋กœ, ์ด์ „ ๋ฒ„์ „์ธ Maple ์‹œ์Šคํ…œ์šฉ QCDMAPT๋ฅผ Fortran์œผ๋กœ ๊ตฌํ˜„ํ•œ ๊ฒƒ์ž…๋‹ˆ๋‹ค. ์ด ํŒจํ‚ค์ง€๋Š” ๊ฐ•ํ•œ ์ƒํ˜ธ์ž‘์šฉ์˜ ๋ณต์žก์„ฑ์„ ๋‹ค๋ฃจ๋Š” ๋ฐ ์žˆ์–ด ํ•ต์‹ฌ์ ์ธ ๋„๊ตฌ์ด๋ฉฐ, ํŠนํžˆ ์ŠคํŽ™ํŠธ๋Ÿผ ํ•จ์ˆ˜ ๊ณ„์‚ฐ์— ์ค‘์ ์„ ๋‘๊ณ  ์žˆ์Šต๋‹ˆ๋‹ค. 1. ํ”„๋กœ๊ทธ๋žจ ๊ฐœ์š” QCDMAPT F๋Š” Fortran 77 ์ด์ƒ์„ ์ง€์›ํ•˜๋Š” ๋ชจ๋“  ์ปดํ“จํ„ฐ์™€ ์šด์˜ ์ฒด์ œ์—์„œ ์‹คํ–‰๋  ์ˆ˜ ์žˆ์œผ๋ฉฐ, CERNLIB์˜ MATHLIB ๋ผ์ด๋ธŒ๋Ÿฌ๋ฆฌ๊ฐ€ ํ•„์š”ํ•ฉ๋‹ˆ๋‹ค. ์ด ํŒจํ‚ค์ง€๋Š” ๋ฉ”์ธ ํ”„๋กœ๊ทธ๋žจ(QCDMAPT F.f)๊ณผ ๋‘ ๊ฐœ์˜

HEP-PH HEP-TH Physics
Toda tau functions with quantum torus symmetries

Toda tau functions with quantum torus symmetries

: ๋ณธ ๋…ผ๋ฌธ์€ ์œ„์ƒ ๋ฌธ์ž์—ด์˜ ๋…น๋Š” ๊ฒฐ์ • ๋ชจ๋ธ๊ณผ 5์ฐจ์› ๊ฒŒ์ด์ง€ ์ด๋ก  ๊ฐ„์˜ ํ†ตํ•ฉ ๊ฐ€๋Šฅ์„ฑ์„ ํƒ๊ตฌํ•œ๋‹ค. ๋…น๋Š” ๊ฒฐ์ • ๋ชจ๋ธ์€ ๋ฌผ๋ฆฌํ•™์—์„œ ์ค‘์š”ํ•œ ์—ญํ• ์„ ํ•˜๋Š” ๋ชจ๋ธ๋กœ, ํŠนํžˆ ์œ„์ƒ ๋ฌธ์ž์—ด๊ณผ ๊ด€๋ จ๋œ ๋ฌธ์ œ๋ฅผ ๋‹ค๋ฃจ๋Š”๋ฐ ํ™œ์šฉ๋œ๋‹ค. ๋…ผ๋ฌธ์—์„œ๋Š” ์ด๋Ÿฌํ•œ ๋ชจ๋ธ์˜ ๋ถ„ํ•  ํ•จ์ˆ˜๊ฐ€ ํŠน์ • ์™ธ๋ถ€ ์ž ์žฌ๋ ฅ์— ์˜ํ•ด ๋ณ€ํ˜•๋  ๋•Œ Toda ๊ณ„์ธต์˜ ํƒ€์šฐ ํ•จ์ˆ˜์™€ ๋ณธ์งˆ์ ์œผ๋กœ ๋™์ผํ•˜๋‹ค๋Š” ๊ฒƒ์„ ๋ณด์—ฌ์ค€๋‹ค. Toda ๊ณ„์ธต์€ ํ†ต์ƒ์ ์ธ ํŽ˜๋ฅด๋ฏธ์˜จ ์‹œ์Šคํ…œ์—์„œ ํŒŒ์ƒ๋œ ์ค‘์š”ํ•œ ์ˆ˜ํ•™์  ๊ตฌ์กฐ๋กœ, ์ด๋ก  ๋ฌผ๋ฆฌํ•™๊ณผ ์ˆ˜ํ•™์—์„œ ๋„๋ฆฌ ์—ฐ๊ตฌ๋˜๊ณ  ์žˆ๋‹ค. ๋…ผ๋ฌธ์—์„œ๋Š” Toda ํƒ€์šฐ ํ•จ์ˆ˜์™€ ๋ณ€ํ˜•๋œ ๋ถ„ํ•  ํ•จ์ˆ˜ ๊ฐ„์˜ ๊ด€๊ณ„๋ฅผ ์–‘์ž ํ† 

HEP-TH Nonlinear Sciences Mathematics MATH-PH
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Next-to-next-to-leading order post-Newtonian spin(1)-spin(2) Hamiltonian for self-gravitating binaries

: ๋ณธ ๋…ผ๋ฌธ์€ ๊ณ ์† ์ž์ „ํ•˜๋Š” ๋ฐ€๋„ ๋†’์€ ๋ฌผ์ฒด ๊ฐ„์˜ ์ƒํ˜ธ์ž‘์šฉ์— ๋Œ€ํ•œ ํฌ์ŠคํŠธ๋‰ดํ„ด(PN) ์Šคํ•€(1) ์Šคํ•€(2) ํ•ด๋ฐ€ํ† ๋‹ˆ์•ˆ์„ ์œ ๋„ํ•˜๊ณ  ๋ถ„์„ํ•ฉ๋‹ˆ๋‹ค. ์ด ์—ฐ๊ตฌ๋Š” ์ผ๋ฐ˜ ์ƒ๋Œ€์„ฑ ์ด๋ก ์—์„œ ๋‘ ๋ฌผ์ฒด๊ฐ€ ๊ณ ์†์œผ๋กœ ํšŒ์ „ํ•  ๋•Œ์˜ ๋™์—ญํ•™์  ํ–‰๋™์„ ์ดํ•ดํ•˜๋Š” ๋ฐ ์ค‘์š”ํ•œ ์—ญํ• ์„ ํ•ฉ๋‹ˆ๋‹ค. 1. ์—ฐ๊ตฌ ๋ฐฐ๊ฒฝ ๋ฐ ๋ชฉ์  ๋ณธ ๋…ผ๋ฌธ์€ ๊ธฐ์กด์˜ ์Šคํ•€ ์ƒํ˜ธ์ž‘์šฉ์— ๋Œ€ํ•œ ์—ฐ๊ตฌ๋ฅผ ํ™•์žฅํ•˜๊ณ , ํŠนํžˆ 4PN ์ˆœ์„œ๊นŒ์ง€ ๊ณ„์‚ฐ๋œ ํ•ด๋ฐ€ํ† ๋‹ˆ์•ˆ์„ ์ œ์‹œํ•ฉ๋‹ˆ๋‹ค. ์ด๋Š” ๋‘ ๋ฌผ์ฒด๊ฐ€ ๊ณ ์†์œผ๋กœ ํšŒ์ „ํ•˜๋Š” ๊ฒฝ์šฐ์— ์ ์šฉ๋˜๋ฉฐ, ์ผ๋ฐ˜ ์ƒ๋Œ€์„ฑ ์ด๋ก ์—์„œ์˜ ๊ทผ์‚ฌ์น˜์ธ ํฌ์ŠคํŠธ๋‰ดํ„ด(PN) ์ ‘๊ทผ๋ฒ•์„ ์‚ฌ์šฉํ•˜์—ฌ ์œ ๋„๋ฉ๋‹ˆ๋‹ค. 2. ์—ฐ๊ตฌ ๋ฐฉ

HEP-TH General Relativity Astrophysics

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