Condensed Matter

All posts under tag "Condensed Matter"

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Multicanonical entropy like-solution of statistical temperature weighted histogram analysis method (ST-WHAM)

Multicanonical entropy like-solution of statistical temperature weighted histogram analysis method (ST-WHAM)

๋ณธ ๋…ผ๋ฌธ์€ ST WHAM (ํ†ต๊ณ„์  ์˜จ๋„ ๊ฐ€์ค‘ ํžˆ์Šคํ† ๊ทธ๋žจ ๋ถ„์„ ๋ฐฉ๋ฒ•)์— ์ค‘์ ์„ ๋‘๊ณ , ์ด ๋ฐฉ๋ฒ•์ด ๋ฏธ์„ธ๊ด€์„ฑ ์—”ํŠธ๋กœํ”ผ๋ฅผ ์ถ”์ •ํ•˜๋Š” ๋ฐ ์–ผ๋งˆ๋‚˜ ํšจ๊ณผ์ ์ธ์ง€๋ฅผ ๋ถ„์„ํ•ฉ๋‹ˆ๋‹ค. WHAM ๋ฐฉ์‹์˜ ํ•œ๊ณ„์™€ ST WHAM์˜ ๊ฐœ์„ ์ , ๊ทธ๋ฆฌ๊ณ  ์ด๋ฅผ ํ†ตํ•ด ์–ป์„ ์ˆ˜ ์žˆ๋Š” ์—ด์—ญํ•™์  ์ •๋ณด์˜ ์ค‘์š”์„ฑ์„ ๊ฐ•์กฐํ•˜๊ณ  ์žˆ์Šต๋‹ˆ๋‹ค. 1. WHAM๊ณผ ST WHAM์˜ ๋น„๊ต WHAM์€ ๋‹ค์–‘ํ•œ ์˜จ๋„์—์„œ ์ˆ˜ํ–‰๋œ ๋ชฌํ…Œ์นด๋ฅผ๋กœ ์‹œ๋ฎฌ๋ ˆ์ด์…˜ ๋ฐ์ดํ„ฐ๋ฅผ ๊ฒฐํ•ฉํ•˜์—ฌ ์ƒ˜ํ”Œ๋ง์„ ํ–ฅ์ƒ์‹œํ‚ค๋Š” ๋ฐฉ๋ฒ•์ž…๋‹ˆ๋‹ค. ๊ทธ๋Ÿฌ๋‚˜, ์ด ๋ฐฉ์‹์€ ๋ฐ˜๋ณต์ ์ธ ์ˆ˜์น˜ ๊ณผ์ •์„ ํ•„์š”๋กœ ํ•˜๋ฉฐ, ์ด๋ฅผ ํ†ตํ•ด ์—๋„ˆ์ง€ ๋ฐ์ดํ„ฐ๊ฐ€ ์ €์žฅ๋œ ํžˆ์Šคํ† ๊ทธ๋žจ์—์„œ ์ž์œ 

Analysis Physics Condensed Matter
Correlation energy of anisotropic quantum dots

Correlation energy of anisotropic quantum dots

: ๋ณธ ๋…ผ๋ฌธ์€ ๊ณ ๋ฐ€๋„ ํ•œ๊ณ„์—์„œ์˜ ๋น„๋Œ€์นญ ์–‘์ž ์ ์˜ ์ „์ž ์ƒ๊ด€ ๊ด€๊ณ„๋ฅผ ์—ฐ๊ตฌํ•˜๋ฉฐ, ํŠนํžˆ ๋ฐฉํ–ฅ์„ฑ์— ๋”ฐ๋ฅธ ์ƒ๊ด€ ์—๋„ˆ์ง€์˜ ๋ณ€ํ™”๋ฅผ ๋ถ„์„ํ•˜๊ณ  ์žˆ๋‹ค. ์ด๋Š” ์–‘์ž ๋ฌผ๋ฆฌํ•™์—์„œ ์ค‘์š”ํ•œ ๋ฌธ์ œ ์ค‘ ํ•˜๋‚˜๋กœ, ๋‘ ์ „์ž์˜ ์ƒํ˜ธ์ž‘์šฉ๊ณผ ๊ทธ์— ๋”ฐ๋ฅธ ์‹œ์Šคํ…œ์˜ ์—๋„ˆ์ง€๋ฅผ ์ดํ•ดํ•˜๋Š” ๋ฐ ํ•ต์‹ฌ์ ์ธ ์—ญํ• ์„ ํ•œ๋‹ค. 1. ์—ฐ๊ตฌ ๋ฐฐ๊ฒฝ ๋ฐ ์ค‘์š”์„ฑ ์–‘์ž ์ ์€ ์ข…์ข… ํ•˜๋ชจ๋‹‰ ์ž ์žฌ๋ ฅ๊ณผ ์ฟ ์šธ๋กฌ ๋ฐ˜๋ฐœ๋กœ ๋ชจ๋ธ๋ง๋˜๋ฉฐ, ์ด๋Š” ์‹คํ—˜ ์กฐ๊ฑด์— ๋”ฐ๋ผ ์ „์ž๊ฐ€ 1์ฐจ์›์ ์œผ๋กœ ๊ฐ•ํ•˜๊ฒŒ ๊ตฌ๊ธˆ๋˜๋Š” ๊ฒฝ์šฐ๊ฐ€ ๋งŽ๋‹ค. ์ด๋Ÿฌํ•œ ์‹œ์Šคํ…œ์˜ ์—๋„ˆ์ง€ ๋ถ„์„์€ ๊ตํ™˜ ์ƒ๊ด€ ๋ฐ€๋„ ํ•จ์ˆ˜ ์ด๋ก (DFT) ๊ฐœ๋ฐœ์— ์ค‘์š”ํ•œ ์—ญํ• ์„ ํ•˜๋ฉฐ, ํŠนํžˆ ๊ณ ๋ฐ€๋„ ํ•œ

Physics Condensed Matter
Size Effect of Diagonal Random Matrices

Size Effect of Diagonal Random Matrices

1. ๋ฌด์ž‘์œ„ ํ–‰๋ ฌ ์ด๋ก ์˜ ๋ฐฐ๊ฒฝ ๋ฌด์ž‘์œ„ ํ–‰๋ ฌ ์ด๋ก ์€ ํ˜ผ๋ž€์Šค๋Ÿฌ์šด ์–‘์ž ์‹œ์Šคํ…œ์˜ ์ŠคํŽ™ํŠธ๋Ÿผ ํ†ต๊ณ„์  ํŠน์„ฑ์„ ์„ค๋ช…ํ•˜๋Š” ์ค‘์š”ํ•œ ๋„๊ตฌ์ด๋‹ค. ํŠนํžˆ, ์‹œ๊ฐ„ ๋ฐ˜์ „ ๋ถˆ๋ณ€ ์–‘์ž ์‹œ์Šคํ…œ์€ ํšŒ์ „ ๋Œ€์นญ์„ ๊ฐ€์งˆ ๋•Œ ๊ฐ€์šฐ์Šค ์ง๊ต ์ง‘ํ•ฉ(GOE)์˜ ๋ฌด์ž‘์œ„ ํ–‰๋ ฌ๋กœ ํ‘œํ˜„๋œ๋‹ค. ์ด๋Š” ํ˜ผ๋ž€์Šค๋Ÿฌ์šด ์‹œ์Šคํ…œ์—์„œ ์ˆ˜์ค€ ์ƒ๊ด€ ๊ด€๊ณ„๋ฅผ ์„ค๋ช…ํ•˜๋Š” ๋ฐ ์‚ฌ์šฉ๋˜๋ฉฐ, N์ด ๋ฌดํ•œ๋Œ€๋กœ ์ ‘๊ทผํ•  ๋•Œ ๊ฐ€์žฅ ํฅ๋ฏธ๋กœ์šด ๊ฒฐ๊ณผ๊ฐ€ ์–ป์–ด์ง„๋‹ค. 2. ๋Œ€๊ฐ ๋ฌด์ž‘์œ„ ํ–‰๋ ฌ์˜ ํŠน์„ฑ ๋…ผ๋ฌธ์€ N์ฐจ์› ๋Œ€๊ฐ ๋ฌด์ž‘์œ„ ํ–‰๋ ฌ์˜ ๊ณ ์œ ๊ฐ’ ํ†ต๊ณ„ํ•™์„ ๋ถ„์„ํ•œ๋‹ค. ํŠนํžˆ, ์ˆ˜์ค€ ๊ฐ„ ๊ฐ„๊ฒฉ(NNS) ๋ถ„ํฌ์™€ ๋ถ„์‚ฐ ฮฃยฒ๋ฅผ ํ†ตํ•ด ๋‹จ๊ธฐ ๋ฐ ์žฅ๊ธฐ ์ƒ๊ด€ ๊ด€๊ณ„๋ฅผ

Nonlinear Sciences Condensed Matter
Nucleated polymerisation in the presence of pre-formed seed filaments

Nucleated polymerisation in the presence of pre-formed seed filaments

: ๋ณธ ๋…ผ๋ฌธ์€ ์˜ค์˜ค์‚ฌ์™€(Oosawa)์˜ ๊ณ ์ „์ ์ธ ๋ˆ„ํด๋ ˆ์ดํ‹ฐ๋“œ ์ค‘ํ•ฉ ์ด๋ก ์„ ํ™•์žฅํ•˜์—ฌ, ์ƒ๋ฌผ ํ•„๋ผ๋ฉ˜ํŠธ ์„ฑ์žฅ์„ ์„ค๋ช…ํ•˜๋Š” ์ƒˆ๋กœ์šด ๊ด€์ ์„ ์ œ์‹œํ•ฉ๋‹ˆ๋‹ค. ํŠนํžˆ ์ฃผ๋œ ๊ด€์‹ฌ์‚ฌ๋Š” ์‚ฌ์ „ ํ˜•์„ฑ๋œ ์”จ์•— ๋ฌผ์งˆ์ด ์กด์žฌํ•˜๋Š” ์‹œ์Šคํ…œ์—์„œ์˜ ์ค‘ํ•ฉ ๊ณผ์ •์ž…๋‹ˆ๋‹ค. 1. ๋ˆ„ํด๋ ˆ์ดํ‹ฐ๋“œ ์ค‘ํ•ฉ ์ด๋ก ์˜ ๋ฐฐ๊ฒฝ ์˜ค์˜ค์‚ฌ์™€๋Š” 1960๋…„๋Œ€์— ์ƒ๋ฌผ ํ•„๋ผ๋ฉ˜ํŠธ ์„ฑ์žฅ์„ ์„ค๋ช…ํ•˜๊ธฐ ์œ„ํ•ด ๋ˆ„ํด๋ ˆ์ดํ‹ฐ๋“œ ์ค‘ํ•ฉ ์ด๋ก ์„ ๊ฐœ๋ฐœํ–ˆ์Šต๋‹ˆ๋‹ค. ์ด ์ด๋ก ์€ ์ฃผ๋œ ๋ˆ„ํด๋ ˆ์ด์…˜๊ณผ ๊ธธ์–ด์ง, ๊ทธ๋ฆฌ๊ณ  ๋ถ„ํ•ด ๊ณผ์ •์„ ๊ณ ๋ คํ•˜์—ฌ ์•กํ‹ด๊ณผ ํŠœ๋ถˆ๋ฆฐ ๊ฐ™์€ ๋‹จ๋ฐฑ์งˆ์˜ ์ค‘ํ•ฉ์„ ์„ค๋ช…ํ•ฉ๋‹ˆ๋‹ค. ์ดํ›„ ์—ํŠผ๊ณผ ํŽ˜๋ก ๋„ค๋Š” ์ด ์ด๋ก ์„ ํ™•์žฅํ•˜์—ฌ ์ฐจ์„ธ๋Œ€ ๋ˆ„ํด๋ ˆ์ด์…˜ ๊ฒฝ

Quantitative Biology Physics Condensed Matter
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Competition between hydrogen bonding and electric field in single-file transport of water in carbon nanotubes

๋ณธ ์—ฐ๊ตฌ๋Š” ๋‹จ์ผ ๋ฒฝ ํƒ„์†Œ ๋‚˜๋…ธ ํŠœ๋ธŒ(SWCNTs) ๋‚ด๋ถ€๋ฅผ ํ†ต๊ณผํ•˜๋Š” ๋ฌผ์˜ ์ด๋™์„ MD ์‹œ๋ฎฌ๋ ˆ์ด์…˜์„ ํ†ตํ•ด ์กฐ์‚ฌํ•˜๊ณ , ํŠนํžˆ ์ „๊ธฐ์žฅ์ด ์ˆ˜์ง์œผ๋กœ ์ ์šฉ๋˜์—ˆ์„ ๋•Œ์˜ ํšจ๊ณผ์— ์ฃผ๋ชฉํ•ฉ๋‹ˆ๋‹ค. SWCNTs๋Š” ๊ฐ•ํ•œ ์นœ์ˆ˜์„ฑ์„ ๊ฐ€์ง€๊ณ  ์žˆ์œผ๋ฉฐ, ์ด๋ฅผ ํ†ตํ•ด ๋ฌผ ๋ถ„์ž๊ฐ€ ์ž๋ฐœ์ ์œผ๋กœ ์ฑ„์›Œ์ง€๋Š” ๋…ํŠนํ•œ ํŠน์„ฑ์„ ๋ณด์ž…๋‹ˆ๋‹ค. ์ด ์—ฐ๊ตฌ์—์„œ๋Š” ์ด๋Ÿฌํ•œ ์‹œ์Šคํ…œ ๋‚ด์—์„œ ๋ฌผ ๋ถ„์ž์˜ ์ด๋™ ๋ฐฉ์‹์ด ํƒ„์†Œ ๋‚˜๋…ธ ํŠœ๋ธŒ์˜ ์ง€๋ฆ„์— ๋”ฐ๋ผ ์–ด๋–ป๊ฒŒ ๋ณ€ํ™”ํ•˜๋Š”์ง€์— ๋Œ€ํ•œ ์ดํ•ด๋ฅผ ํ™•์žฅํ•˜๊ณ ์ž ํ•ฉ๋‹ˆ๋‹ค. 1. ๋ฌผ ๋ถ„์ž์˜ ๋ฐฐ์—ด๊ณผ ์ˆ˜์†Œ ๊ฒฐํ•ฉ ๋„คํŠธ์›Œํฌ ํƒ„์†Œ ๋‚˜๋…ธ ํŠœ๋ธŒ ๋‚ด๋ถ€์—์„œ๋Š” ๋ฌผ ๋ถ„์ž๊ฐ€ 1์ฐจ์› ์ˆœ์„œ๋กœ ๋ฐฐ์—ด๋˜์–ด ์ด๋™ํ•˜๋ฉฐ,

Condensed Matter Physics
The impact of a carbon nanotube on the cholesterol domain localized on a protein surface

The impact of a carbon nanotube on the cholesterol domain localized on a protein surface

๋งค๋ ฅ์ ์ธ ํ•œ๊ธ€ ์ œ๋ชฉ: ํƒ„์†Œ ๋‚˜๋…ธํŠœ๋ธŒ์˜ ์กด์žฌ๊ฐ€ ์ฝœ๋ ˆ์Šคํ…Œ๋กค ๋„๋ฉ”์ธ ๋ถ„ํฌ์— ๋ฏธ์น˜๋Š” ์˜ํ–ฅ ์ดˆ๋ก ์ „์ฒด ๋ฒˆ์—ญ ๋ฐ ์ •๋ฆฌ: ๋ณธ ์—ฐ๊ตฌ์—์„œ๋Š” ํƒ„์†Œ ๋‚˜๋…ธํŠœ๋ธŒ(CNT)๊ฐ€ ๋‹จ๋ฐฑ์งˆ ํ‘œ๋ฉด์—์„œ ํ˜•์„ฑ๋œ ์ฝœ๋ ˆ์Šคํ…Œ๋กค ๋„๋ฉ”์ธ์˜ ๋ถ„ํฌ์— ๋ฏธ์น˜๋Š” ์˜ํ–ฅ์„ ๋ถ„์ž ๋™์—ญํ•™(MD) ์‹œ๋ฎฌ๋ ˆ์ด์…˜์„ ํ†ตํ•ด ์กฐ์‚ฌํ–ˆ์Šต๋‹ˆ๋‹ค. ํŠนํžˆ, ํ˜ˆ๊ด€ ๋‚ดํ”ผ ์„ธํฌ์˜ ์–‡์€ ์ธต์„ ํ˜•์„ฑํ•˜๋Š” ๋‹จ๋ฐฑ์งˆ 1LQV๋ฅผ ์‚ฌ์šฉํ•˜์—ฌ, ํƒ„์†Œ ๋‚˜๋…ธํŠœ๋ธŒ๊ฐ€ ์ฝœ๋ ˆ์Šคํ…Œ๋กค ๋ถ„์ž์˜ ๋ถ„ํฌ์™€ ์—ญํ•™์— ์–ด๋–ค ์˜ํ–ฅ์„ ๋ฏธ์น˜๋Š”์ง€ ํ™•์ธํ–ˆ์Šต๋‹ˆ๋‹ค. ์‹œ๋ฎฌ๋ ˆ์ด์…˜ ๊ฒฐ๊ณผ, ํƒ„์†Œ ๋‚˜๋…ธํŠœ๋ธŒ์˜ ์กด์žฌ๋กœ ์ธํ•ด ๋งŽ์€ ์ฝœ๋ ˆ์Šคํ…Œ๋กค์ด ๋‹จ๋ฐฑ์งˆ ํ‘œ๋ฉด์—์„œ ์ด๋™ํ•˜์—ฌ ๋‚˜๋…ธํŠœ๋ธŒ ์ฃผ๋ณ€์œผ๋กœ ์นจ์ฐฉ๋˜๋Š”

Condensed Matter Physics
Damage spreading in the sandpile model of SOC

Damage spreading in the sandpile model of SOC

๋ณธ ๋…ผ๋ฌธ์€ ๋ชจ๋ž˜๋”๋ฏธ ๋ชจ๋ธ์—์„œ ์ž‘์€ ๊ต๋ž€์ด ์–ด๋–ป๊ฒŒ ํ™•์‚ฐ๋˜๋Š”์ง€๋ฅผ ์—ฐ๊ตฌํ•˜๋Š” ๊ฒƒ์œผ๋กœ, ์ด๋Š” ์ž์œจ ์‹œ์Šคํ…œ์˜ ๋™์  ํ–‰๋™์— ๋Œ€ํ•œ ์ค‘์š”ํ•œ ์ดํ•ด๋ฅผ ์ œ๊ณตํ•œ๋‹ค. ํŠนํžˆ, ์ด ์—ฐ๊ตฌ๋Š” ์†์ƒ(damage)์˜ ํ™•์‚ฐ์„ ํ†ตํ•ด SOC ์ƒํƒœ์—์„œ์˜ ์—ญ๋™์„ฑ์„ ํƒ๊ตฌํ•˜๋ฉฐ, ์ด๋ฅผ ํ†ตํ•ด ๋ชจ๋ž˜๋”๋ฏธ ๋ชจ๋ธ์ด ์–ด๋–ป๊ฒŒ ์ž๊ธฐ ์กฐ์งํ™”๋˜๊ณ  ๋น„ํŒ์ ์ธ ์ƒํƒœ๋ฅผ ์œ ์ง€ํ•˜๋Š”์ง€์— ๋Œ€ํ•œ ๊นŠ์€ ํ†ต์ฐฐ๋ ฅ์„ ์ œ๊ณตํ•œ๋‹ค. 1. ๋ชจ๋ธ ๋ฐ ์‹œ๋ฎฌ๋ ˆ์ด์…˜ ๋ชจ๋ž˜๋”๋ฏธ ๋ชจ๋ธ์€ ๊ฒฉ์ž ์ž๋™์ž ๋ชจ๋ธ๋กœ, ๊ฐ ์‚ฌ์ดํŠธ๋Š” ์ •์ˆ˜ ๊ฐ’์„ ๊ฐ€์งˆ ์ˆ˜ ์žˆ๋Š” ๋ณ€์ˆ˜ z(i, j)๋ฅผ ๊ฐ–๋Š”๋‹ค. ์ด ๊ฐ’์€ ๋ชจ๋ž˜ ์ž…์ž๊ฐ€ ์ถ”๊ฐ€๋  ๋•Œ๋งˆ๋‹ค ์ฆ๊ฐ€ํ•˜๊ณ , ํŠน์ • ์ž„๊ณ„๊ฐ’ zm์—

Condensed Matter Nonlinear Sciences Model
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Partition function of 1-, 2-, and 3-D monatomic ideal gas: A simple and comprehensive review

๋ณธ ๋…ผ๋ฌธ์€ ์›์ž ๊ธฐ์ฒด์˜ ๋ถ„ํ•  ํ•จ์ˆ˜๋ฅผ 1์ฐจ์›, 2์ฐจ์›, ๊ทธ๋ฆฌ๊ณ  3์ฐจ์›์—์„œ ๊ฐ๊ฐ ํƒ๊ตฌํ•˜๊ณ  ์ด๋ฅผ ํ†ตํ•ด ์ฐจ์›์— ๋”ฐ๋ฅธ ๊ณตํ†ต์ ๊ณผ ์ฐจ์ด์ ์„ ๋ถ„์„ํ•œ๋‹ค. ์ด ์—ฐ๊ตฌ๋Š” ๊ณ ์ „์ ์ธ ๋ฌผ๋ฆฌํ•™์  ์ ‘๊ทผ ๋ฐฉ์‹์„ ๋ฐ”ํƒ•์œผ๋กœ ํ•˜๋ฉฐ, ํŠนํžˆ ๋งฅ์Šค์›ฐ ๋ณผ์ธ ๋งŒ ํ†ต๊ณ„ํ•™์˜ ์›๋ฆฌ๋ฅผ ํ™œ์šฉํ•˜์—ฌ ์ž…์ž์˜ ์ƒํƒœ ์ˆ˜์™€ ์—๋„ˆ์ง€ ๊ฐ„์˜ ๊ด€๊ณ„๋ฅผ ์ •๋ฆฝํ•˜๊ณ  ์ด๋ฅผ ํ†ตํ•ด ๋ถ„ํ•  ํ•จ์ˆ˜๋ฅผ ๋„์ถœํ•˜๋Š” ๋ฐฉ๋ฒ•๋ก ์„ ์ œ์‹œํ•œ๋‹ค. 1. ์ด๋ก ์  ๋ฐฐ๊ฒฝ ๋…ผ๋ฌธ์€ ฮ“ ํ†ตํ•ฉ๊ณผ ๋งฅ์Šค์›ฐ ๋ณผ์ธ ๋งŒ ํ†ต๊ณ„ํ•™์— ๋Œ€ํ•œ ์ดํ•ด๊ฐ€ ํ•„์š”ํ•˜๋‹ค๋Š” ์ ์—์„œ ์ถœ๋ฐœํ•œ๋‹ค. ์ด๋Ÿฌํ•œ ์ˆ˜ํ•™์  ๊ธฐ๋ฐ˜ ์œ„์—์„œ, ์›์ž ๊ธฐ์ฒด์˜ ๋ถ„ํ•  ํ•จ์ˆ˜๋ฅผ ๊ณ„์‚ฐํ•˜๋Š” ๋ฐฉ๋ฒ•์„ ํƒ๊ตฌํ•œ๋‹ค. ์ด๋ก ์ ์œผ๋กœ, ๋ถ„ํ• 

Condensed Matter Physics

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