Fermi-Pasta-Ulam譬ｼ蟄舌�縲�ｫ俶ｬ｡蜈ォamilton邉ｻ縺ｮ莉｣陦ｨ逧�↑繝｢繝�Ν縺ｮ荳€縺､縺ｧ縺�
繧九€ゅ◎縺ｮ邱ｩ蜥碁℃遞九↓縺､縺�※縲∝髪荳€縺ｮ繝輔�繝ｪ繧ｨ繝｢繝ｼ繝峨ｒ蜉ｱ襍ｷ縺励◆蛻晄悄譚｡莉ｶ荳�
縺ｧ縺ｮ莉悶�繝｢繝ｼ繝峨→縺ｮ繧ｨ繝阪Ν繧ｮ繝ｼ莠､謠幃℃遞九′縲√％繧後∪縺ｧ隧ｳ縺励￥隱ｿ縺ｹ繧峨ｌ縺ｦ縺�
縺溘€ゅ％縺ｮ繧ｨ繝阪Ν繧ｮ繝ｼ莠､謠幃℃遞九�蛻晄悄谿ｵ髫弱↓縺翫＞縺ｦ縺ｯ縲∬ｪ伜ｰ守樟雎｡縺ｨ蜻ｼ縺ｰ繧後ｋ
迴ｾ雎｡縺瑚ｦｳ貂ｬ縺輔ｌ 繧九％縺ｨ縺檎衍繧峨ｌ縺ｦ縺�ｋ縲�[萓九∴縺ｰ, 蟯ｩ豕｢隰帛ｺｧ 迴ｾ莉｣迚ｩ逅�ｭｦ
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繝阪Ν繧ｮ繝ｼ縺碁寔荳ｭ縺励◆謖ｯ蜍輔′謖∫ｶ壹☆繧九≠繧倶ｸ€螳壽悄髢難ｼ郁ｪ伜ｰ取悄髢難ｼ峨�蠕後↓縲∵€･
豼€縺ｫ莉悶�繝｢繝ｼ繝峨→縺ｮ繧ｨ繝阪Ν繧ｮ繝ｼ莠､謠帙′逕溘§繧狗樟雎｡縺ｧ縺ゅｋ縲ゅ＠縺九＠縺ｪ縺後ｉ縲�
縺薙ｌ縺ｾ縺ｧ隱伜ｰ取悄髢謎ｸｭ縺ｮ繧ｨ繝阪Ν繧ｮ繝ｼ莠､謠幃℃遞九↓髢｢縺励※縲∝�蛻�↓隱ｬ譏弱〒縺阪ｋ隗｣
譫千噪縺ｪ邨先棡縺ｯ辟｡縺九▲縺溘€よ悽遐皮ｩｶ縺ｧ縺ｯ縲∝�譛溷干襍ｷ繝｢繝ｼ繝峨↓蟇ｾ縺吶ｋ螟芽ｪｿ荳榊ｮ牙ｮ�
諤ｧ繧抵ｼ呈ｬ｡縺ｮ蟷ｳ蝮�喧豕輔ｒ逕ｨ縺�※隗｣譫千噪縺ｫ隱ｿ縺ｹ縲∬ｪ伜ｰ守樟雎｡ 縺ｫ髢｢縺吶ｋ蟷ｾ縺､縺九�
諤ｧ雉ｪ:

1.隱伜ｰ取凾髢薙′逋ｺ謨｣縺吶ｋ繧ｨ繝阪Ν繧ｮ繝ｼ髢ｾ蛟､縺ｮ蟄伜惠縺ｨ縲�
  縺昴�邉ｻ縺ｮ繧ｵ繧､繧ｺ縺ｨ蛻晄悄蜉ｱ襍ｷ繝｢繝ｼ繝画ｳ｢謨ｰ縺ｸ縺ｮ萓晏ｭ俶€ｧ, 
2.隱伜ｰ取凾髢薙�髟ｷ縺輔→邉ｻ縺ｮ繧ｨ繝阪Ν繧ｮ繝ｼ蛟､縺ｮ髢｢菫�, 
3.隱伜ｰ取悄髢薙↓縺翫＞縺ｦ縲∵怙螟ｧ謌宣聞邇�ｒ遉ｺ縺吶Δ繝ｼ繝画ｳ｢謨ｰ, 

繧呈�繧峨°縺ｫ縺励◆縲� 
隗｣譫千噪邨先棡縺ｨ謨ｰ蛟､螳滄ｨ鍋ｵ先棡縺後€∵･ｵ繧√※濶ｯ縺丈ｸ€閾ｴ縺吶ｋ縺薙→繧ら､ｺ縺吶€� 

螟芽ｪｿ荳榊ｮ牙ｮ壽€ｧ縺ｨDiscrete Breather縺ｨ蜻ｼ縺ｰ繧後ｋ 
螻€蝨ｨ謖ｯ蜍慕憾諷九�蠖｢謌舌�髢｢菫ゅ↓縺､縺�※繧りｧｦ繧後◆縺�→諤昴≧縲� 

縺ｪ縺翫€∵悽逋ｺ陦ｨ蜀�ｮｹ縺ｯ縲∬ｫ匁枚[ Kazuyuki Yoshimura, 
'Parametric resonance energy exchange and induction phenomenon in a
one-dimensional nonlinear oscillator chain', 
Phys. Rev. E vol.62 (2000) 6447-6461.]縺ｫ蝓ｺ縺･縺上€�